Add an API for launching intent to view permission usage.

Adding a new intent acttion for the permission controller to ask an
app to show its permission usage to help the user understand what
and why is being used. We are adding a permission to protect this
action to prevent apps trampolining into other apps when asked to
show their permission usge.

Test: compiles

bug:131760942

Change-Id: I5217d6319fd98d40c8879bdd7af5fe466bf9143e