Bluetooth HID Device API docs and helper

* Add a builder for BluetoothHidDeviceAppQosSettings
* Add documentation for BluetoothHidDeviceAppSdpSettings
and BluetoothHidDeviceAppQosSettings
* Fix the behavior of and BluetoothHidDeviceAppSdpSettings.equals()
and BluetoothHidDeviceAppQosSettings.equals()

Bug: 63384609
Test: test with HID device apps
Change-Id: I933f4ec3034e1f704ddd614e48b76d27fda8b6ff