Add configuration files and update API URL in MeteocatService

- Created .dockerignore, .editorconfig, .gitignore, .prettierrc, .vscode configurations (extensions.json, launch.json, mcp.json, tasks.json).
- Updated nginx.conf to include API proxy settings.
- Changed apiUrl in MeteocatService to use relative path.

src/app/services/meteocat.service.ts

@@ -11,7 +11,7 @@ import { EstacioMesCercanaResponse } from '../models/estacio-mes-cercana.model';
   providedIn: 'root'
 })
 export class MeteocatService {
-  private readonly apiUrl = 'http://localhost:8080/api/v1';
+  private readonly apiUrl = '/api/v1';
 
   constructor(private http: HttpClient) { }