feat: Goa GEL Blockchain e-Licensing Platform - Full Stack Implementation

Complete implementation of the Goa Government e-Licensing platform with:

Backend:
- NestJS API with JWT authentication
- PostgreSQL database with Knex ORM
- Redis caching and session management
- MinIO document storage
- Hyperledger Besu blockchain integration
- Multi-department workflow system
- Comprehensive API tests (266/282 passing)

Frontend:
- Angular 21 with standalone components
- Angular Material + TailwindCSS UI
- Visual workflow builder
- Document upload with progress tracking
- Blockchain explorer integration
- Role-based dashboards (Admin, Department, Citizen)
- E2E tests with Playwright (37 tests)

Infrastructure:
- Docker Compose orchestration
- Blockscout blockchain explorer
- Development and production configurations

backend/src/common/interceptors/timeout.interceptor.ts

@@ -0,0 +1,18 @@
+import {
+  Injectable,
+  NestInterceptor,
+  ExecutionContext,
+  CallHandler,
+  RequestTimeoutException,
+} from '@nestjs/common';
+import { Observable } from 'rxjs';
+import { timeout } from 'rxjs/operators';
+
+@Injectable()
+export class TimeoutInterceptor implements NestInterceptor {
+  intercept(_context: ExecutionContext, next: CallHandler): Observable<unknown> {
+    return next.handle().pipe(
+      timeout(30000),
+    );
+  }
+}