feat(sync): Await connection instead of poll

[Rudxain]

Describe the feature you want

As explained here, UADNG should use adb wait-for-device instead of polling adb devices. This is more efficient, and doesn't require retry.

The only downside is that it always waits for another Android device, so we need 1 adb devices to check if one is already connected

Acknowledgements

• This issue is not a duplicate of an existing feature request.
• I have chosen an appropriate title.
• All requested information has been provided properly.