fix: add support for tmdb ids (#74)

Author: TimilsinaBimal

app/services/stremio/library.py

@@ -74,7 +74,8 @@ async def get_library_items(self, auth_key: str) -> dict[str, list[dict[str, Any
                 if item.get("type") not in ["movie", "series"]:
                     continue
                 item_id = item.get("_id", "")
-                if not item_id.startswith("tt"):
+                if not item_id.startswith("tt") and not item_id.startswith("tmdb:"):
+                    # either imdb id or tmdb id should be there.
                     continue
 
                 # Check Watched status