Fix facedet download (#15811)

* Support downloading face models

* Handle download and loading correctly

* Add face dir creation

* Fix error

* Fix

* Formatting

* Move upload to button

* Show number of faces in library for each name

* Add text color for score

* Cleanup

frigate/util/downloader.py

@@ -51,12 +51,14 @@ class ModelDownloader:
         download_path: str,
         file_names: List[str],
         download_func: Callable[[str], None],
+        complete_func: Callable[[], None] | None = None,
         silent: bool = False,
     ):
         self.model_name = model_name
         self.download_path = download_path
         self.file_names = file_names
         self.download_func = download_func
+        self.complete_func = complete_func
         self.silent = silent
         self.requestor = InterProcessRequestor()
         self.download_thread = None
@@ -97,6 +99,9 @@ class ModelDownloader:
                 },
             )
 
+        if self.complete_func:
+            self.complete_func()
+
         self.requestor.stop()
         self.download_complete.set()