Added manifest metadata to define the content capture settings activity.

Test: m update-api
Test: mmm frameworks/base/:doc-comment-check-docs
Test: adb shell dumpsys content_capture
Test: CtsContentCaptureServiceTestCases

Bug: 119264902

Change-Id: I656c50d9a45f68312898c8857572d5fe3f55c193
8 files changed