Develop (#74)

* Feature/save game (#65)

* feat: add saving game

* refactor

* fix

* fix: some bug

* feat: better ai

* fix: tests en passant

* fix: isValidMove returns true for en passant capture

* fix: isValidMove returns true for en passant capture

* fix: add true

* Create CODE_OF_CONDUCT.md

Signed-off-by: Antoine Greuzard <[email protected]>

* Update issue templates

* refactor ai

* refactor board

* refactor piece

* refactor pieces

* refactor utils

* refactor canvas

* refactor timer

* fix: drag impossible on ai pieces

* fix: remove save game

---------

Signed-off-by: Antoine Greuzard <[email protected]>
Co-authored-by: Antoine GREUZARD <[email protected]>

* fix: remove saveGameToFile

---------

Signed-off-by: Antoine Greuzard <[email protected]>
Co-authored-by: Antoine GREUZARD <[email protected]>