Capture screenshot and collect data without starting the feedback flow UI

[li-manssing]

Summary

Capture screenshot and collect data without starting the feedback flow UI

• Added captureScreenshotAndCollectData(), a new public API method
  that captures a screenshot and collects data without starting the feedback flow UI.
• This is for consumers to use their own custom UI with the captured
  data.
• Added public interface DataCollectionCallback to be implemented by
  consumers to get the Result data.
• Added new button in the demo application to test the newly added API.
• Made other required changes accordingly.

Testing Done

Tested locally. Please refer the attached screen-recording and logs:

ShakyNewApiTestButton.webm

18:19:51.069  D  Screenshot URI: file:///data/user/0/com.linkedin.android.shaky.app/files/screenshots/bitmap_1764247790998.jpg
18:19:51.069  D  Collected data: Bundle[{com.linkedin.android.shaky.Result.screenshotUri=file:///data/user/0/com.linkedin.android.shaky.app/files/screenshots/bitmap_1764247790998.jpg, com.linkedin.android.shaky.Result.attachments=[file:///data/user/0/com.linkedin.android.shaky.app/files/screenshots/bitmap_1764247790998.jpg]}]

[li-manssing]

Work is paused on this task hence closing the PR for now. Will re-open the PR once we resume work on it.