Implementation of Gyro mouse for Android app

[Philip Cohn-Cort]

Hi all,

I noticed that we have three open MRs ([229], [285], [302]) to address
the same new feature: the ability to use the Gyroscope and
Accelerometer of an Android device as a remote input method.

It would be great to get this feature added to the codebase, so I
wanted to start a discussion here about the best approach, and to
decide on the implementation details.

~Philip Cohn-Cort

229: https://invent.kde.org/network/kdeconnect-android/-/merge_requests/229
285: https://invent.kde.org/network/kdeconnect-android/-/merge_requests/285
302: https://invent.kde.org/network/kdeconnect-android/-/merge_requests/302