Adding option in global setting to control the display message during user switch

Bug: 145915635
Bug: 145132885
Test: adb shell settings put global android.car.ENABLE_USER_SWITCH_DEVELOPER_MESSAGE true
Merged-In: I70c72d7d74c72a78d919ae34906b6f7b96466ad1
Change-Id: I70c72d7d74c72a78d919ae34906b6f7b96466ad1
(cherry picked from commit e12de0beb45d07aaaaec923e9f009130d5053d2f)
1 file changed