Version v0.2.2-beta

Release notes

In this release
- Better versioning of the plugin
- GPU support on Windows through DirectML (any available GPU)

Install:
- Windows (64bit): Unzip the `obs-backgroundremoval-win64.zip` file in the OBS directory (e.g. `C:\Program Files\obs-studio`)
- Mac OSX: Unzip `obs-backgroundremoval-macosx.zip` to `/Applications/OBS.app/Contents/`. e.g. `$ unzip -o obs-backgroundremoval-macosx.zip -d /Applications/OBS.app/Contents/`