Add post endpoint for cities

endpoints/cities.post.py

@@ -0,0 +1,20 @@
+# Entity: City
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from core.database import get_db
+from models.city import City
+from schemas.city import CitySchema, CityCreate
+
+router = APIRouter()
+
+@router.post("/cities", status_code=201, response_model=CitySchema)
+async def create_city(
+    city: CityCreate,
+    db: Session = Depends(get_db)
+):
+    db_city = City(**city.dict())
+    db.add(db_city)
+    db.commit()
+    db.refresh(db_city)
+    return db_city