Initial Broadcast Radio HAL 1.1 default implementation.

The new implementation does not rely on legacy HAL, it implements
HAL 1.1 directly instead.

This is not a full implementation yet, but passes all existing tests.

Bug: b/36864090
Test: VTS, instrumentalization, Unit
Change-Id: Ic8eddd19d0bf6777b4086d099183d71e05d7da0e