BLE: GattService debug infomation implementation

Implement GattService debug information.

Bug: 140842714
Test: adb shell dumpsys bluetooth_manager
Change-Id: I8c707873d40edf3e50004aebf10c7104e0b2f745
Merged-In: I8c707873d40edf3e50004aebf10c7104e0b2f745
2 files changed