Deselecting pieces now works when u click another piece and other improvements to code

[notvaishakh]

The updated Chessboard component introduces enhancements for a more intuitive user experience, with a key highlight being the implementation of deselection functionality. Streamlined logic and improved event handling, including precise mouse interactions and canvas drawing capabilities, enhance interactivity. Utilizing useEffect ensures the canvas remains up-to-date, while refactoring and cleanup optimize code organization and maintainability.

[Sama-004]

@notvaishakh add screenshots and videos

[nischal-shetty2]

already fixed by #172

[hkirat]

Closing in favor of https://github.com/code100x/chess/pull/172