WearOS support

[TheLastProject]

Fixes #25

TODO:

• Some kind of confirmation a device is trusted (feat(bluetooth): Add trusted device pairing and encrypted sync #3223)
• Notification icon fixes (icon is too small now, see feat(bluetooth): Add trusted device pairing and encrypted sync #3223 (comment))
• Additional testing on Android 11 and below
• String consistency ("Wear" or "WearOS", not both interchangeably)
• Document WearOS implementation and how to implement it for other apps in a file similar to CONTENT_PROVIDER.md in docs/
• Fastlane screenshots (required for Google Play, I'll make them)
• Versioning changes

TODO but can wait until after the first release:

• Better status indicator (having it on the bottom makes it hard to see the current state, need to find different placement that won't make the card list jump)

Note: as discussed with linsui, Catima versioning will change: https://forum.f-droid.org/t/question-about-submitting-a-wearos-companion-app-to-f-droid/34580/9

So the next version codes should be:

• 172 for WearOS
• 173 for Catima

And after that:

• 182 for WearOs
• 183 for Catima