Add support to launch Edit Screenshot Flow

[li-pbhadour]

Summary

• This PR adds support to launch Edit Screenshot flow manually using the existing support in Shaky library.

Support

• Added support of type enum to differentiate between different FlowType.
• Updated FeedbackType#newIntent with new parameter for flow type and further store it in intent extras to distinguish between feedback and edit screenshot flow.
• Added a new constant key ActionConstants#ACTION_START_SCREENSHOT_EDIT_FLOW to trigger the screenshot edit flow manually.
• Added support to launch startDrawFragment for both Bug Report and Edit Screenshot actions when screenshot is available in FeedbackActivity#onCreate.
• Updated FeedbackActivity#changeToFragment to prevent adding the fragment transaction for edit screenshot flow thus ensuring editor closes once the flow completes, instead of returning to an empty screen.
• Added support FeedbackActivity#submitEditScreenshotIntent to send broadcast using intent action ACTION_COMPLETE_EDIT_SCREENSHOT of the edited screenshot URI and updated the BroadcastReceiver to receive the intent for edit screenshot flow type.
• Added support Shake#startEditScreenshotFlow to start the flow based on whether a screenshot is available, otherwise starts the standard feedback flow.
• Added support ShakeDelegate#submitScreenshot to provide a callback for handling the edited screenshot result after the flow completes.
• Added support to retrieve the screenshot Uri from the intent received on BroadcastReceiver in FeedbackActivity#createReceiver and to notify that flow is completed.
• Added a demo button in layout activity_demo.xml and invoked the edit screenshot flow on its tapped action in ShakyDemo#onCreate.

Testing Done

• Tested locally. Please refer the attached recordings.
• Feedback Flow is launched when the screenshot is not available (null).
• Edit Screenshot Flow is launched when screenshot is available.

Scenario	Feedback Flow	Edit Screenshot Flow (tested through debug changes)
Video	FeedbackFlow.mp4	EditScreenshotFlow.mp4