NDK Backend: Create AIBinder_Class

This is the NDK class definition which is used to let the NDK handle
incoming transactions and also to use with AIBinder_associateClass when
a remote binder is retrieved.

Bug: 112664205
Test: atest android.binder.cts
Change-Id: I1cdc1249b20e6398e4e1fc131b29b8c8cd839c96
2 files changed