Add basic endpoints

backend/app/dtos/house_create_request.py

@@ -0,0 +1,9 @@
+from pydantic import BaseModel
+
+class HouseCreateRequest(BaseModel):
+    address: str
+    city: str
+    country: str
+    price: float
+    description: str
+

backend/app/dtos/house_create_response.py

@@ -0,0 +1,5 @@
+from pydantic import BaseModel
+
+class HouseCreateResponse(BaseModel):
+    id: str
+