Re-enabled the NSFW function (turn-off by default).

@refer to the PR #237 in the `experimental` branch.

Signed-off-by: Vic P <vic4key@gmail.com>

modules/globals.py

@@ -17,6 +17,7 @@ keep_fps = None
 keep_audio = None
 keep_frames = None
 many_faces = None
+nsfw_filter = None
 video_encoder = None
 video_quality = None
 max_memory = None
@@ -25,6 +26,5 @@ execution_threads = None
 headless = None
 log_level = 'error'
 fp_ui: Dict[str, bool] = {}
-nsfw = None
 camera_input_combobox = None
 webcam_preview_running = False