feat: add inline audio player for MMS attachments (#261)

[LeoLeSommer]

Type of change(s)

• Bug fix
• Feature / enhancement
• Infrastructure / tooling (CI, build, deps, tests)
• Documentation

What changed and why

• Add inline audio player for MMS attachments

Tests performed

• Send a MMS with an audio
• Check that the audio is playable
• Check what happen if i play or manipulate an audio while an other is playing
• Check what happen on theme change
• Check what happen on font change
• Check what happen on font size change (the font size stay the same as document preview does)
• Check that the widget also works when previews from the new message form

Before & after preview

Closes the following issue(s)

• Closes Play audio attachments in app #261

Checklist

• I read the contribution guidelines.
• I manually tested my changes on device/emulator (if applicable).
• I updated the "Unreleased" section in CHANGELOG.md (if applicable).
• I have self-reviewed my pull request (no typos, formatting errors, etc.).
• I understand every change in this pull request.