Add CORS support and Docker configuration for web service

- Added CORS allowed origins in config.compose.yaml to enable cross-origin requests from the web service.
- Updated docker-compose.yml to include a new web service with build context and port mapping for local development.
- Enhanced gateway.go to support additional HTTP methods in CORS responses.
- Updated README.md to document the new web service and its configuration requirements.

README.md

@@ -57,6 +57,7 @@ docker compose logs -f gateway
 | **[docs/API.md](docs/API.md)** | Контракт Telemt Control API (`/v1/…`) |
 | **[docs/AGGREGATE.md](docs/AGGREGATE.md)** | Агрегирующие эндпоинты шлюза (`/api/agg/…`), CORS, кэш |
 | **[docs/AGGREGATE_OPENAPI.yaml](docs/AGGREGATE_OPENAPI.yaml)** | OpenAPI 3 черновик для `/api/agg/*` (генерация типов для UI) |
+| **[web/README.md](web/README.md)** | Web UI (SvelteKit + shadcn-svelte): установка, `PUBLIC_TELEMT_GATEWAY_URL`, Docker |
 | **[docs/GEOIP.md](docs/GEOIP.md)** | GeoLite2 City (страна/город) и опционально ASN (номер AS, организация) для IP в `unique-ips` |
 
 ## Сборка и тесты без Docker