Camera: Add support for readout timestamp

The readout timestamp is added to CaptureResultExtras used by
onCaptureStarted(). If the HAL supports readoutTimestamp, the
readout timestamp is passed in onCaptureStarted().

Test: atest Experimental2022SystemTest
Bug: 229097448
Bug: 229773853
Change-Id: I1ac822b14a2a4198e7c8ef17a39212f504c2d719
14 files changed