added RAG, Multiuser, TG bot

backend/app/api/chat_schemas.py

@@ -0,0 +1,12 @@
+from pydantic import BaseModel
+
+from app.api.schemas import MessageOut
+
+
+class MessagesPageOut(BaseModel):
+    messages: list[MessageOut]
+    has_more: bool
+
+
+class GenerationStatusOut(BaseModel):
+    active: bool