GD-Shim: Create a seaparate GD_IDL_MODULE to support and IDLE stack

* There is a transient state where Bluetooth stack is loaded but not
  enabled. Theoritically, we should be able to load stored Bluetooth
  adapter name and address and report it to the Java layer.
* Correspondingly, some GD modules also need to present there

Bug: 160101414
Test: enable GD and scan for devices
Tag: #gd-refactor
Change-Id: I637320c6796c31ccf43c9ae3a6d8c779db87ebf0