Adds a new mechanism to limit subscriptions' number of videos to an explicit number (only supported date ranges prior to this).
Example usage:
```
output_options:
keep_max_files: 10
```
will only keep 10 videos at max.
In addition:
- `keep_max_files` is bundled into the `Only Recent` preset and can be used via setting the `only_recent_max_files` override variable (see examples or README for usage).
- Changed the `date_range` variable name to `only_recent_date_range` for more clarity. Usage of `date_range` will continue to work.
Adds a new docker image: `ytdl-sub-gui:latest` which is ytdl-sub packaged with VS-Code via LinuxServer.io's code-server image: https://hub.docker.com/r/linuxserver/code-server
Proper documentation will be added later
* Updated docker to use buildx Buildkit
* Updated github actions to include QEMU/buildx to build multiarch containers
* Removed packages after build is done
* Updated documentation to set the correct default thumbnail file name
* Parallel jobs (#1)
Implemented parallel docker builds on Github Actions
* Updated default config file in Docker container
* Replaced Pillow with ffmpeg for thumbnail converting (and updated documentation to change the default thumbnail to -thumb.jpg) (#2)
* Swapped Pillow for ffmpeg for thumbnail conversion
* Further changed default thumbname to include "-thumb" (Kodi needs this to pick up the thumbnail image)
* Added ffmpeg bitexact for reproducability
* Removed extra packages needed for Pillow
* Updated ref check (#3)
* Fixed formatting on if statement for deploy job
Co-authored-by: Maka0 <bas@oddens.net>
* `ytdl_options` defaults for each download strategy
* fix docker, fix defaults getting added, add debugger test
* test playlist as well
* fix with hack
* fix full channel test
* existing
* youtube video url
* WIP, channel /user/ and /c/ should be valid
* unit tests passing
* soundcloud artist url
* soundcloud username
* break configs with name change
* Update all yamls with urls
* update all docs
* more negative url tests
