itch.io publishing improvements

[magikmw]

1. Currently the version of the app is only shown on the itch.io download page. Could also show the version
   • in app (about or settings page)
   • in the binary name
2. It seems the github repo is already on version 0.0.3, but itch.io is not updated. Implementing a CI workflow like Github Actions could help with streamlining the publishing process.

• Quick-googled reference for the github actions workflow: https://bitbra.in/2020/08/01/publish-godot-game-to-itchio.html

[lentsius-bark]

this is something i haven't ventured into yet. if there's someone willing to help let me know