Android: Connect to remote boinc

[Phoenix616]

Describe the problem

Right now there is no good way to manage boinc instances on Android.

Describe the solution you'd like

The ability to add remote instances of boinc in the android app and manage it the same as local instances similarly to how it is possible on the desktop via the rpc. (Ideally there would be a dropdown somewhere to switch between multiple saved instances too)

Additional context

No response

[Phoenix616]

I tried implementing this here by simply using the same logic as with the "remote" setting enabled to connect via RPC but this seems to fail to connect to the remote (I think? Haven't really been able to easily get debugging/errors logs in my test setup yet :S)