Handle master location settings on/off for NFW location access

When master location settings off:
 Disable non-framework location access in GNSS HAL by setting the
 proxy app list to empty.

When master location settings on:
 Enable non-framework location access in GNSS HAL only to entities
 represented by proxy apps for which the user has granted location
 permission.

Fixes: 122855984
Test: Partial testing with cuttlefish and location proxy test app.
Change-Id: I2546e2da2f1478db98a463910c783407c0c872ec