- Change name and summary to be compliant with Flathub's guidelines.
  The "for COSMIC" part of the name is unnecessary given that it's
  mentioned in the summary.
- Make the description slightly longer and more different from the
  summary
- Add various URLs (for contributing, donating, etc.)
- Add hardware support info (supported screen sizes, internet access,
  input devices

- Change name back
- Add bullet points to list in desc