Shreeman Arjun Sahu

Upgraded example to support android 12

2

*Replace this paragraph with a description of what this PR is changing or adding, and why. Consider including before/after screenshots.* Every PR must update the corresponding documentation in the `code`,...

Added flexible widget extension. Please merge @iampawan .

Got error when use with responsive framework. Fixed by checking mounted property. 

Puzzle tiles not swapping correctly

3

https://user-images.githubusercontent.com/24736211/196008173-f9a368d3-572e-430f-a9e0-8adf290a5c62.mp4

I have tried to complete riverpod migration in this repo. Its completed. Will create PR with previous file structure soon. (https://github.com/Shreemanarjun/flutter_puzzle_hack_riverpod)

Fix swapping of tiles logic

Added cross file plugin [https://pub.dev/packages/cross_file](url) to use XFIle Fixed share files

Fixed some styles for Flutter 3 changes