feat: add priority filtering and sort stability to V3 Lookup System

app/routers/lookup_v3.py

@@ -20,6 +20,7 @@ async def get_v3_lookup_list(
     for_id: Optional[int] = Query(None),
     site_id: Optional[str] = Query(None, min_length=8, max_length=22),
     include_disabled: bool = Query(False),
+    only_priority: bool = Query(False),
     account_ctx: AccountContext = Depends(get_account_context),
     response: Response = Response
 ):
@@ -55,7 +56,8 @@ async def get_v3_lookup_list(
         for_type=for_type,
         for_id=for_id,
         include_disabled=include_disabled,
-        whitelist=whitelist
+        whitelist=whitelist,
+        only_priority=only_priority
     )
     
     if not results and not include_disabled: