adding lb4 crud operations on user

.dockerignore

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+node_modules
+npm-debug.log
+/dist
+# Cache used by TypeScript's incremental build
+*.tsbuildinfo

.eslintignore

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+node_modules/
+dist/
+coverage/
+.eslintrc.js

.eslintrc.js

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+module.exports = {
+  extends: '@loopback/eslint-config',
+};

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# Transpiled JavaScript files from Typescript
+/dist
+
+# Cache used by TypeScript's incremental build
+*.tsbuildinfo

.mocharc.json

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+{
+  "exit": true,
+  "recursive": true,
+  "require": "source-map-support/register"
+}

.npmrc

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+package-lock=true
+scripts-prepend-node-path=true

.prettierignore

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+dist
+*.json

.prettierrc

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+{
+  "bracketSpacing": false,
+  "singleQuote": true,
+  "printWidth": 80,
+  "trailingComma": "all",
+  "arrowParens": "avoid"
+}

.vscode/settings.json

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+{
+  "editor.rulers": [80],
+  "editor.tabCompletion": "on",
+  "editor.tabSize": 2,
+  "editor.trimAutoWhitespace": true,
+  "editor.formatOnSave": true,
+  "editor.codeActionsOnSave": {
+    "source.organizeImports": true,
+    "source.fixAll.eslint": true
+  },
+
+  "files.exclude": {
+    "**/.DS_Store": true,
+    "**/.git": true,
+    "**/.hg": true,
+    "**/.svn": true,
+    "**/CVS": true,
+    "dist": true,
+  },
+  "files.insertFinalNewline": true,
+  "files.trimTrailingWhitespace": true,
+
+  "typescript.tsdk": "./node_modules/typescript/lib",
+  "typescript.format.insertSpaceAfterOpeningAndBeforeClosingNonemptyBraces": false,
+  "typescript.preferences.quoteStyle": "single",
+  "eslint.run": "onSave",
+  "eslint.nodePath": "./node_modules",
+  "eslint.validate": [
+    "javascript",
+    "typescript"
+  ]
+}

.vscode/tasks.json

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+{
+  // See https://go.microsoft.com/fwlink/?LinkId=733558
+  // for the documentation about the tasks.json format
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "Watch and Compile Project",
+      "type": "shell",
+      "command": "npm",
+      "args": ["--silent", "run", "build:watch"],
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": "$tsc-watch"
+    },
+    {
+      "label": "Build, Test and Lint",
+      "type": "shell",
+      "command": "npm",
+      "args": ["--silent", "run", "test:dev"],
+      "group": {
+        "kind": "test",
+        "isDefault": true
+      },
+      "problemMatcher": ["$tsc", "$eslint-compact", "$eslint-stylish"]
+    }
+  ]
+}

.yo-rc.json

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+{
+  "@loopback/cli": {
+    "packageManager": "npm",
+    "version": "2.16.1"
+  }
+}

DEVELOPING.md

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+# Developer's Guide
+
+We use Visual Studio Code for developing LoopBack and recommend the same to our
+users.
+
+## VSCode setup
+
+Install the following extensions:
+
+ - [eslint](https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint)
+ - [prettier](https://marketplace.visualstudio.com/items?itemName=esbenp.prettier-vscode)
+
+## Development workflow
+
+### Visual Studio Code
+
+1. Start the build task (Cmd+Shift+B) to run TypeScript compiler in the
+   background, watching and recompiling files as you change them. Compilation
+   errors will be shown in the VSCode's "PROBLEMS" window.
+
+2. Execute "Run Rest Task" from the Command Palette (Cmd+Shift+P) to re-run the
+   test suite and lint the code for both programming and style errors. Linting
+   errors will be shown in VSCode's "PROBLEMS" window. Failed tests are printed
+   to terminal output only.
+
+### Other editors/IDEs
+
+1. Open a new terminal window/tab and start the continuous build process via
+   `npm run build:watch`. It will run TypeScript compiler in watch mode,
+   recompiling files as you change them. Any compilation errors will be printed
+   to the terminal.
+
+2. In your main terminal window/tab, run `npm run test:dev` to re-run the test
+   suite and lint the code for both programming and style errors. You should run
+   this command manually whenever you have new changes to test. Test failures
+   and linter errors will be printed to the terminal.

Dockerfile

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+# Check out https://hub.docker.com/_/node to select a new base image
+FROM node:10-slim
+
+# Set to a non-root built-in user `node`
+USER node
+
+# Create app directory (with user `node`)
+RUN mkdir -p /home/node/app
+
+WORKDIR /home/node/app
+
+# Install app dependencies
+# A wildcard is used to ensure both package.json AND package-lock.json are copied
+# where available (npm@5+)
+COPY --chown=node package*.json ./
+
+RUN npm install
+
+# Bundle app source code
+COPY --chown=node . .
+
+RUN npm run build
+
+# Bind to all network interfaces so that it can be mapped to the host OS
+ENV HOST=0.0.0.0 PORT=3000
+
+EXPOSE ${PORT}
+CMD [ "node", "." ]

README.md

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+# loopback-assignment
+
+This application is generated using [LoopBack 4 CLI](https://loopback.io/doc/en/lb4/Command-line-interface.html) with the
+[initial project layout](https://loopback.io/doc/en/lb4/Loopback-application-layout.html).
+
+## Install dependencies
+
+By default, dependencies were installed when this application was generated.
+Whenever dependencies in `package.json` are changed, run the following command:
+
+```sh
+npm install
+```
+
+To only install resolved dependencies in `package-lock.json`:
+
+```sh
+npm ci
+```
+
+## Run the application
+
+```sh
+npm start
+```
+
+You can also run `node .` to skip the build step.
+
+Open http://127.0.0.1:3000 in your browser.
+
+## Rebuild the project
+
+To incrementally build the project:
+
+```
+npm run build
+```
+
+To force a full build by cleaning up cached artifacts:
+
+```
+npm run clean
+npm run build
+```
+
+## Fix code style and formatting issues
+
+If `eslint` and `prettier` are enabled for this project, you can use the
+following commands to check code style and formatting issues.
+
+```sh
+npm run lint
+```
+
+To automatically fix such issues:
+
+```sh
+npm run lint:fix
+```
+
+## Other useful commands
+
+- `npm run migrate`: Migrate database schemas for models
+- `npm run openapi-spec`: Generate OpenAPI spec into a file
+- `npm run docker:build`: Build a Docker image for this application
+- `npm run docker:run`: Run this application inside a Docker container
+
+## Tests
+
+```sh
+npm test
+```
+
+## What's next
+
+Please check out [LoopBack 4 documentation](https://loopback.io/doc/en/lb4/) to
+understand how you can continue to add features to this application.
+
+[![LoopBack](<https://github.com/strongloop/loopback-next/raw/master/docs/site/imgs/branding/Powered-by-LoopBack-Badge-(blue)-@2x.png>)](http://loopback.io/)