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/.gitignore

@@ -0,0 +1,54 @@
+# Dependencies
+node_modules/
+npm-debug.log
+yarn-error.log
+
+# Build
+dist/
+build/
+*.tsbuildinfo
+
+# Environment
+.env
+.env.local
+.env.*.local
+.env.production.local
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+.DS_Store
+*.sublime-project
+*.sublime-workspace
+
+# Testing
+coverage/
+.nyc_output/
+jest.results.json
+
+# Logs
+logs/
+*.log
+lerna-debug.log
+
+# OS
+.AppleDouble
+.LSOverride
+Thumbs.db
+
+# Cache
+.cache/
+.npm
+.eslintcache
+
+# Temporary files
+tmp/
+temp/
+*.tmp
+
+# Docker
+.docker/
+docker-compose.override.yml