[2/2] Settings: Lockscreen notifications: Allow apps to be excluded from being displayed

Credits to 0xD34D / ChameleonOS for the original implementation for Active Display

Change-Id: I5153748bb7d8f6cc0a255628c4df5697d5a64939

Conflicts:
	res/values/ok_strings.xml

Conflicts:
	res/values/pa_strings.xml

Conflicts:
	res/values/AOSPLUS_strings.xml