Better include path (#include <mapper-vts/2.0/MapperVts.h>), better
library naming, and move GraphicsMapperHidlEnvironment to where
tests are defined.
Test: VTS
Change-Id: I9fbf6515993ac11852b11ca6b8194a58afe5579a
Move libVtsHalGraphicsMapperTestUtils from 2.0/vts/functional/ to
2.0/utils/vts/. Run clang-format.
Test: VTS
Change-Id: I1e87129cbdc12167160f7e2f1cd76478e88bbf41