Simple Photo Widget

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**NEW** Added tutorial video section to launch screen.
**NEW** Added settings for photo rotation and widget loading indicators.
**NEW** Added column and row settings for uniform and hexagon layout.
- Fixed the crash at widget configuration screen with input dialog open during orientation changes
- Updated how widgets are refreshed after orientation change.
- Removed the service and notification.
- reorganized the widget configuration screen.
- Implemented Firebase Analytics.