Add landing pages library with comprehensive components and demos

🤖 Generated with [Claude Code](https://claude.ai/code)

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

projects/ui-landing-pages/ng-package.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "../../node_modules/ng-packagr/ng-package.schema.json",
+  "dest": "../../dist/ui-landing-pages",
+  "lib": {
+    "entryFile": "src/public-api.ts"
+  }
+}