Add a flag for new MultiResolutionImageReader constructor

The new constructor takes a usage flags parameter.

Local flag overwrite:
adb shell device_config put camera_platform com.android.internal.camera.flags.multiresolution_imagereader_usage_config true

Bug: 301588215
Test: Build pass
Change-Id: I35bd5856270318e18b23e60c4be63af879683d85