Merge changes from topic "hwcomposer-cleanup"
* changes:
graphics: add composer 2.2 default impl
graphics: convert composer default impl to a library
graphics: add Composer to HAL support library
graphics: move ComposerClient to HAL support library
graphics: add ComposerCommandEngine
graphics: add ComposerResources
graphics: move ComposerBase to HAL support library
graphics: add libhwc2on{1,fb}adapter
graphics: more reusable libVtsHalGraphicsComposerTestUtils
graphics: clang-format composer VTS
graphics: move libVtsHalGraphicsComposerTestUtils