Permissions Watch settings UI port

This CL contains all the UI elements needed to build the Wear
version of the Settings UI for permissions.

The actual implementation for the Wear version of SettingsUI
will be done in a follow up bug.

This is basically a straight port from our Settings app and
wearable-support lib.  I tweaked two strings and changed
the package paths to make it easier to group the files
together.

BUG: 23080561

Change-Id: I6d72d29dd1926ad07d63f85b52ccf9f72ff70df1