Added a "lite" flag on ContentCaptureOptions.

It will be used to let activities from the ContentCapture service package to use
the ContentCaptureManager APIs (such as isContentCaptureFeatureEnabled()), without
triggering content capture per se.

Bug: 122958583
Test: manual verification
Test: atest CtsContentCaptureServiceTestCases # sanity check

Change-Id: I0305fa9f3adb68e6faff80afcb965ae4643f2992