Android: Increase target and compileSdk version to 32 (Android 12L/Sv2)

[Simonx22]

This PR updates the target and compile SDK version to 32. See the Android 12L announcement for more information on Android 12L.

I have tested this on the Android Emulator. Adding and booting games works fine.

It's worth noting that the on-screen controls don't play nicely with the split-screen mode:

However, this is nothing related to the Android SDK version and already happens on the current SDK version (31) on odd form factors, like the one you can see in the first screenshot.

[JosJuice]

The behavior you're seeing with the on-screen controls is caused by us saving the positions of the controls using pixel coordinates. If you reset the placement of the controls, or if it's your first time running Dolphin after installing it, I believe the buttons will be correctly placed.

At some point we should switch over saving the control positions from using SharedPreferences to using an INI file. Maybe we should change to using floats 0.0-1.0 instead of using pixels? Alternatively we could add another "set" of saved position for folded and not folded, like we currently have two sets for landscape and portrait...