feat: added generate endpoints

solution/services/backend/api/v1/generate/schemas.py

@@ -0,0 +1,14 @@
+from typing import Any
+
+from ninja import Schema
+
+
+class GenerateAdTextIn(Schema):
+    advertiser_name: str
+    ad_title: str
+
+
+class Promise(Schema):
+    task_id: str
+    status: str
+    result: Any