C2 VTS: Format using clang-format

Added .clang-format and formatted all the sources and headers

Bug: 184389394
Test: atest VtsHalMediaC2V1_0TargetAudioDecTest \
      VtsHalMediaC2V1_0TargetAudioEncTest \
      VtsHalMediaC2V1_0TargetVideoDecTest \
      VtsHalMediaC2V1_0TargetVideoEncTest \
      VtsHalMediaC2V1_0TargetComponentTest \
      VtsHalMediaC2V1_0TargetMasterTest
Change-Id: Ia132a8c051b5ab442afb1114d220f822168a3632