feat: add Angular workspace with demo app and library build

- Restructure into standard Angular library workspace
- Library source in projects/ngx-pretext-table/
- Demo app in src/ using PretextVirtualScrollDirective
- Switch @chenglou/pretext dependency to npm registry (^0.0.4)
- Fix moduleResolution to "bundler" for Angular 17 compatibility

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -1,23 +1,34 @@
 {
-  "name": "ngx-pretext-table",
-  "version": "0.0.1",
-  "description": "Variable-height virtual scrolling for PrimeNG p-table powered by @chenglou/pretext",
-  "keywords": [
-    "angular",
-    "primeng",
-    "virtual-scroll",
-    "pretext",
-    "table",
-    "variable-row-height"
-  ],
-  "license": "MIT",
-  "peerDependencies": {
-    "@angular/common": "^17.0.0 || ^18.0.0 || ^19.0.0",
-    "@angular/core": "^17.0.0 || ^18.0.0 || ^19.0.0",
-    "@chenglou/pretext": ">=0.0.4"
+  "name": "ngx-pretext-table-workspace",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "ng": "ng",
+    "start": "ng serve demo",
+    "build": "ng build ngx-pretext-table && ng build demo",
+    "build:lib": "ng build ngx-pretext-table",
+    "build:demo": "ng build demo",
+    "watch": "ng build demo --watch --configuration development"
   },
   "dependencies": {
-    "tslib": "^2.3.0"
+    "@angular/animations": "^17.3.0",
+    "@angular/common": "^17.3.0",
+    "@angular/compiler": "^17.3.0",
+    "@angular/core": "^17.3.0",
+    "@angular/forms": "^17.3.0",
+    "@angular/platform-browser": "^17.3.0",
+    "@angular/platform-browser-dynamic": "^17.3.0",
+    "@angular/router": "^17.3.0",
+    "@chenglou/pretext": "^0.0.4",
+    "rxjs": "~7.8.0",
+    "tslib": "^2.3.0",
+    "zone.js": "~0.14.3"
   },
-  "sideEffects": false
+  "devDependencies": {
+    "@angular-devkit/build-angular": "^17.3.17",
+    "@angular/cli": "^17.3.17",
+    "@angular/compiler-cli": "^17.3.0",
+    "ng-packagr": "^17.3.0",
+    "typescript": "~5.4.2"
+  }
 }