Renamed controller to better fit the overall nameing scheme

ref #104

src/controllers/GroupContactController.ts

@@ -10,7 +10,7 @@ import { ResponseGroupContact } from '../models/responses/ResponseGroupContact';
 
 @JsonController('/contacts')
 @OpenAPI({ security: [{ "AuthToken": [] }, { "RefreshTokenCookie": [] }] })
-export class ContactController {
+export class GroupContactController {
 	private contactRepository: Repository<GroupContact>;
 
 	/**