Add libbinder_ndk_unit_test_host

A new test module for host-based unit tests of libbinder_ndk. For now,
it has a couple of tests from libbinder_ndk_unit_test that were
disabled.

Bug: 300548972
Test: atest --host libbinder_ndk_unit_test_host
Change-Id: I99a3354b0e0fa6ee3391ca820b36dbdef226022d