uwb(service): Remove stack redundancies (1/2)

Now that qorvo UCI stack is integrated to master, remove some of the
redundancies in the stack that was present to support the legacy stack.

Changes:
1. Integrate UwbServiceImpl directly to UwbServiceCore.
2. Fix framework-uwb visibility to ensure that the SDK lib is only
available to select number of tests.
3. Also make ServiceUwbTests also compile against SDK.

Bug: b/196225233
Test: Manual testing.
Change-Id: Ib3d443965123c55bf61eea4eacf5b3133e0f832c
9 files changed