adding code project for Resolve GH Issues

Author: ChrisHowd

DownloadableCodeProjects/standalone-lab-projects/ghsecurity-resolve-gh-issues/ContosoShopEasy/ContosoShopEasy.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

DownloadableCodeProjects/standalone-lab-projects/ghsecurity-resolve-gh-issues/ContosoShopEasy/Program.cs

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+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

DownloadableCodeProjects/standalone-lab-projects/ghsecurity-resolve-gh-issues/readme.txt

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+The code project should be a small "real-world" code project that contains security vulnerabilities relevant to the app domain (either eCommerce or data processing). 
+
+Code projects should use sample data and console outputs to observe behaviors before and after resolving issues.
+
+Issues: the issues focus on code patterns and logic flaws (e.g., injection, weak cryptography, improper data handling).
+
+Important: the code security issues can't include any secrets or credentials that would trigger automated GitHub secret scanning alerts. GH secret scanning is covered separately.