drm hal aidl API cleanup

* Merge IDrmFactory / ICryptoFactory
* Simplify isContentTypeSupported / isCryptoSchemeSupported
* Remove requiresSecureDecoderDefault
* DecryptArgs
* DestinationBuffer union
* byte[16] Uuid
* KeyStatusType underscores
* setSharedBufferBase generic buffer type

Bug: 214410088
Test: VtsAidlHalDrmTargetTest
Change-Id: Ic30100af9bdb95aff9d140e093edb083c1b49592