Amethyst v0.22.1: Replace your soul

Markdown support is almost complete. There are a few issues when a Markdown post uses tags and other Nostr-related features.

- Adds a Follow Action in a Note's Menu by #[0]

- Support for Replaceable Events (NIP-33) by #[1]

- Add Ukrainian (uk) translation by #[2]

- Add Russian (ru) translation by #[3]

- Fixes Preview Error when the url is invalid by #[4]

- Brazilian translations correction by Mario Augusto Rama