Bluetooth: HID: Add support for HID Device Role

This patch adds the HID Device Role support in Bluetooth framework.
Also AIDL and callback related files for HID Device role are added
to provide interface for third party applications to communicate with
HID device Service.

Change-Id: Id03a362b7bcfa2e76056fa0197eaac12ce49b5a2
CRs-Fixed: 573086