Add new permission START_CROSS_PROFILE_ACTIVITIES

This allows holders of START_CROSS_PROFILE_ACTIVITIES permission to start an activity of the caller package in the other profile.
The "android.app.role.SYSTEM_WELLBEING" role will get this permission.

Test: atest CrossProfileAppsHostSideTest
Bug: 207117478
Change-Id: I9f554e937a653a51d5bbdaf19a7a90a9073d1aca
Merged-In: I4f368ec1a5facc0a95efee06b56522db853ff6d8