Add auth-client library for Elixir auth service integration

- Complete Angular client library for authentication and authorization
- JWT token management with automatic refresh and storage
- OAuth integration with social providers (Google, GitHub, etc.)
- Two-factor authentication support (TOTP and backup codes)
- Route guards for authentication and scope-based authorization
- HTTP interceptor for automatic token injection and refresh
- Comprehensive TypeScript interfaces for all API models
- User management features (profile updates, password changes)
- Cross-tab synchronization and token validation
- Complete usage guide with practical examples

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

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

tsconfig.json

@@ -15,6 +15,9 @@
     "experimentalDecorators": true,
     "moduleResolution": "bundler",
     "paths": {
+      "auth-client": [
+        "./dist/auth-client"
+      ],
       "hcl-studio": [
         "./dist/hcl-studio"
       ],
@@ -58,5 +61,13 @@
     "strictInjectionParameters": true,
     "strictInputAccessModifiers": true,
     "strictTemplates": true
-  }
+  },
+  "references": [
+    {
+      "path": "./projects/auth-client/tsconfig.lib.json"
+    },
+    {
+      "path": "./projects/auth-client/tsconfig.spec.json"
+    }
+  ]
 }