fix(nextjs): add import condition to exports map, emit type declarations

Adds 'import' condition alongside 'module' so TypeScript moduleResolution bundler
resolves the package types correctly. Switches tsconfig from noEmit to emitDeclarationOnly
so tsc generates index.d.ts in dist/.

Author: tyler-reitz

src/nextjs/package.json

@@ -3,6 +3,7 @@
   "version": "0.0.1",
   "exports": {
     ".": {
+      "import": "./dist/index.mjs",
       "module": "./dist/index.mjs",
       "types": "./dist/index.d.ts"
     }

src/nextjs/tsconfig.json

@@ -1,11 +1,12 @@
 {
     "compilerOptions": {
       "declaration": true,
+      "emitDeclarationOnly": true,
+      "outDir": "./dist",
       "target": "ESNext",
       "lib": ["esnext"],
       "skipLibCheck": true,
       "strict": false,
-      "noEmit": true,
       "esModuleInterop": true,
       "module": "esnext",
       "moduleResolution": "bundler",