[CI] [Distribution] Automated Releases + Distribution

[vkhitrin]

Automate releases and distribution of the application.

For Linux:

• Binaries
  We can ship the application in a tarball containing the application, and icons (and maybe the desktop entry).
  Perhaps https://github.com/cross-rs/cross can be leveraged in GitHub actions for multi arch compilation?
• Flatpak
  Generate cargo-sources.json and the manifest, and push it to the flatpak repository

For macOS:
We already have just targets that can compile binaries for multiple architectures (tested on Apple Silicon), and create a DMG.
Need to check if GitHub actions can execute these targets.