[Enhancement] Optionally use the YouTube API for improved fast indexing (#282)

* Started adding youtube API for fast indexing

* Hooked youtube API into fast indexing

* Added youtube_api_key to settings

* Added youtube api key to settings UI

* Added tests

* Refactored the youtube api module

* More refactor

* Changed editing mode name from basic to standard

* [WIP] started on copy changes

* Updated copy

docker-compose.yml

@@ -12,3 +12,5 @@ services:
       - ./docker-run.dev.sh
     stdin_open: true
     tty: true
+    env_file:
+      - .env