android: device pins/favorites and match iOS long push menu

[hiimtmac]

Adds support for device pinning - from device list and from peer detail
Match iOS long push menu - ipv4/ipv6/magic DNS, update icon and reorder

Fixes https://github.com/tailscale/corp/issues/47581
Fixes https://github.com/tailscale/corp/issues/47582

Screen_Recording_20260904_110411.mp4

[barnstar]

Looks good - just one small issue with the write serialization. I think we should also add the long press gesture the the search results if that's possible - though we can do that in a follow-up.

[barnstar]

Tangential to this PR, but the client API functions not being suspend fun's is maybe something we should consider changing to avoid the use of continuations here.

[barnstar]

This is missing a try-catch in case the the suspendCancellableCoroutine is cancelled... But it may make more sense to track the job and cancel that. Or just wrap the contents of write() in a mutex.

private var writeJob: Job? = null

fun enqueueWrite(request: FavoritesRequest) {
    writeJob?.cancel() 
    writeJob = viewModelScope.launch {
        write(request)
    }
}

private suspend fun write(request: FavoritesRequest) {
    val snapshot = _favorites.value 
    val profile = currentProfile
    
    _writing.value = true

    try {
        val result = suspendCancellableCoroutine { cont -> 
            val call = client.setFavorites(request) { cont.resume(it) }
        }

        if (currentProfile != profile) return

        result.onFailure {
            TSLog.e(TAG, "Error writing favorites: ${it.message}")
            _favorites.value = snapshot
        }
    } finally {
        _writing.value = false 
    }
}