v0.5.0

294 commits already? THE 2000TH COMMIT? I cannot believe it.

This release brings brings many new things to the table, but also
a breaking change: I switched from Flutter's debug signing key to a key
stored on my YubiKey. So you will have to uninstall and reinstall Moxxy. You will lose
your data, however.

Highlights are:

• Translations! Thank you very much to everyone who provided
  translations in their own languages! We currently have English,
  German, Dutch, French Galician, Japanese, Polish and Russian.
• Read markers are sent, if configured.
• Some notification changes: Moxxy now uses Android's messaging style
  for notifications. The app should also not show a badge anymore.
• Thumbnails for videos are now generated after download.
• You can now share directly to conversations inside Moxxy.
• Moxxy now uses Android 13's new photo picker if possible.

Also, the Google Summer of Code 2023 concluded. This means that Moxxy
technically has the ability to join groupchats. However, since the
experience is not close to what I want, it is currently only "available"
inside debug builds.