[Composer VTS] Subclass the test cases by the interface version

This helps us write tests by version number, and avoids checking version
interface in every test that we add in newer versions, avoids common mistakes of
missing a version check. And makes it clear what features were added in new versions

Test: atest VtsHalGraphicsComposer3_TargetTest
BUG: 274999658
Change-Id: I2a8d5aa6c9d426de02ab0abf2ca662e330b6a5ea