[Enhancements]: AxPcMode

[sujanbimali9]

1. separate wallpaper for pc mode.
2. completely hide keyguard at bottom on pc mode.
3. donot show onscreen keyboard when connected to scrcpy with pc mode on.
4. fix issue with lockscreen not showing properly on pc mode.
5. fix udfs not working when pc mode on with screen off.
6. changing screen resolution not working for scrcpy.

[Saikrishna1504]

1. AxionAOSP/android_packages_apps_AxPcMode@0ee2dc5