Make Husky stage the formatted files

Minor fix, husky needs to stage the changed files after it runs npm run format and npm run lint. NOT let the commits of the old files go through.

step 1: npm install --save-dev lint-staged
step 2: add in package.json :
"lint-staged": {
"*.{js,jsx,ts,tsx}": ["eslint --fix", "prettier --write"],
"*.{scss,css,json,md}": ["prettier --write"]
}
step 3: replace the whole .husky/pre-commit to only have: npx lint-staged

This should do the trick.

Look at the .husky/pre-commit hook file and the package.json to understand the current setup. Install lint-staged, update the package.json with the provided lint-staged configuration, and replace the pre-commit hook content with 'npx lint-staged'. Test by making a commit to ensure the staged files are automatically formatted and linted.

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