Adding AidlMQDescriptor and GrantorDescriptor

Adding these two types to android.hardware.common for future use with
Fast Message Queue in libfmq.

Also adding to the mq_test_service to test them.

Test: system/tools/hidl/tests/run_all_device_tests.sh

Bug: 142326204

Change-Id: I424c4849c822436f58e40f206b09ffdf9baf260b