Adds a AppOpsController that can be suscribed to.

This is a dependency that replaces AppOpsListener asuming all its
responsibilities and functions. Additionally, it can handle arbitrary
callbacks for an activeChanged notification indicating the uid that had
a change.

In the case of location updates, they are removed if they haven't been
updated in 5 sec.

Test: atest
Change-Id: I647e86418e552721f1a1098d611538ef09654243