Add support for address hiding in java layer

- Add isLogRedactionEnabled API in IBluetooth
- Add toStringForLogging to BluetoothAddress
  which returns either redacted string or full address string
- In AdapterService add a private isLogRedactionEnabled API

Test: refactoring CL. Existing unit tests still pass
Bug: 174487588
Tag: #security
Change-Id: I08f4ec5632b067cca827aca81ee1706bf3ecdbae