Prepare release 0.5.0

[evdokimovs]

Prepares 0.5.0 release.

Checklist

• Created PR:
  • [x] In draft mode
  • [x] Name contains issue reference
  • [x] Has type and k:: labels applied
  • [x] Has assignee
• Before review:
  • [x] Documentation is updated (if required)
  • [x] Tests are updated (if required)
  • [x] Changes conform code style
  • [x] CHANGELOG entries are verified and corrected
  • [x] FCM (final commit message) is posted or updated
  • [x] Draft mode is removed
• [ ] Review is completed and changes are approved
  • [ ] FCM (final commit message) is approved
• Before merge:
  • [ ] Milestone is set
  • [ ] PR's name and description are correct and up-to-date
  • [ ] All temporary labels are removed

[evdokimovs]

FCM

Prepare release 0.5.0 (#179)

[tyranron]

FCM

Prepare 0.5.0 release of `medea-jason` crate and `medea_jason` Dart package (#179)

- prepare 0.6.0 release of `medea-client-api-proto` crate
- prepare 0.12.0 release of `medea-control-api-proto` crate

Additionally:
- swtich to `docker compose` commands in `Makefile`