Implement IOmxStore

Separate out MediaCodecsXmlParser and implement IOmxStore and IOMXStore.

Test: make cts -j123 && cts-tradefed run cts-dev -m \
CtsMediaTestCases --compatibility:module-arg \
CtsMediaTestCases:include-annotation:\
android.platform.test.annotations.RequiresDevice

Test: make cts -j123 && cts-tradefed run cts -m \
CtsMediaTestCases -t android.media.cts.MediaCodecListTest

Bug: 37657124

Merged-In: I8c5a3a8fe6defab4f17c8a49bce57452879193dc
Change-Id: I8c5a3a8fe6defab4f17c8a49bce57452879193dc
38 files changed