Add Northflank connection support

- Introduced Northflank as a new app connection option, including API token authentication.
- Implemented connection schemas, validation, and service functions for Northflank.
- Updated API documentation to include Northflank endpoints and integration instructions.
- Added frontend components for creating and managing Northflank connections.

backend/src/services/app-connection/app-connection-service.ts

@@ -96,6 +96,8 @@ import { ValidateMsSqlConnectionCredentialsSchema } from "./mssql";
 import { ValidateMySqlConnectionCredentialsSchema } from "./mysql";
 import { ValidateNetlifyConnectionCredentialsSchema } from "./netlify";
 import { netlifyConnectionService } from "./netlify/netlify-connection-service";
+import { ValidateNorthflankConnectionCredentialsSchema } from "./northflank";
+import { northflankConnectionService } from "./northflank/northflank-connection-service";
 import { ValidateOktaConnectionCredentialsSchema } from "./okta";
 import { oktaConnectionService } from "./okta/okta-connection-service";
 import { ValidatePostgresConnectionCredentialsSchema } from "./postgres";
@@ -170,6 +172,7 @@ const VALIDATE_APP_CONNECTION_CREDENTIALS_MAP: Record<AppConnection, TValidateAp
   [AppConnection.Supabase]: ValidateSupabaseConnectionCredentialsSchema,
   [AppConnection.DigitalOcean]: ValidateDigitalOceanConnectionCredentialsSchema,
   [AppConnection.Netlify]: ValidateNetlifyConnectionCredentialsSchema,
+  [AppConnection.Northflank]: ValidateNorthflankConnectionCredentialsSchema,
   [AppConnection.Okta]: ValidateOktaConnectionCredentialsSchema,
   [AppConnection.Redis]: ValidateRedisConnectionCredentialsSchema
 };
@@ -867,6 +870,7 @@ export const appConnectionServiceFactory = ({
     supabase: supabaseConnectionService(connectAppConnectionById),
     digitalOcean: digitalOceanAppPlatformConnectionService(connectAppConnectionById),
     netlify: netlifyConnectionService(connectAppConnectionById),
+    northflank: northflankConnectionService(connectAppConnectionById),
     okta: oktaConnectionService(connectAppConnectionById),
     laravelForge: laravelForgeConnectionService(connectAppConnectionById)
   };