Using https://github.com/asottile/pyupgrade
1. `__future__` imports and `coding: utf-8` were removed
2. Files were rewritten with `pyupgrade --py36-plus --keep-percent-format`
3. f-strings were cherry-picked from `pyupgrade --py36-plus`
Extractors are left untouched (except removing header) to avoid unnecessary merge conflicts
* Support direct `/player/` URL
* Treat the different versions of an episode as different formats of a single video. So `experience_id` can no longer be used as the video `id` and the `episode_id` is used instead. This means that all existing archives will break
* Extractor options `language` and `version` to pre-select them
* Compat option `seperate-video-versions` to fall back to old behavior (including using the old video IDs)
Closes #428
* All modules and binary names are changed
* All documentation references changed
* yt-dlp no longer loads youtube-dlc config files
* All URLs changed to point to organization account
Co-authored-by: Pccode66
Co-authored-by: pukkandan
