[Android] Implement PowerManager::OnSleep/OnWake

[peak3d]

Description

Call CPoweManager OnWake / OnSleep (through IPowerSyscall) when Android activity lifecycle calls onResume / onPause.

Motivation and Context

There are services inside kodi (e.g. PVR EPG poll) which should be deactivated when kodi is suspended.

How Has This Been Tested?

• Launch kodi
• Hide kodi (using Android TV home button) -> OnSleep
• Bring back kodi into foreground ->OnWake

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• None of the above (please explain below)

[ksooo]

Runtime-tested. Works as expected. Code lgtm as well.

[CiNcH83]

Looks like new suspend handling fixes this issue. Unfortunately, it brings back this issue. When opening the ACTION MENU on BRAVIA, playback is suspended and resumend when closing it.

[FernetMenta]

@peak3d @ksooo having the OS screensaver as the default is not a good idea on this platform. If TV is paused in timeshift mode and OS screensaver kicks in, state is lost.

[peak3d]

thx @FernetMenta, I'll try to reproduce