chore(lint): add a "lint" script to package.json

{{ cookiecutter.project_slug }}/.eslintignore

+/build

{{ cookiecutter.project_slug }}/package.json

@@ -22,6 +22,7 @@
     "copy-webpack-plugin": "^11.0.0",
     "css-loader": "^6.7.1",
     "eslint": "^8.22.0",
+    "eslint-config-react-app": "^7.0.1",
     "eslint-plugin-import": "^2.26.0",
     "eslint-plugin-jsx-a11y": "^6.6.1",
     "eslint-plugin-react": "^7.30.1",
@@ -41,7 +42,8 @@
   },
   "scripts": {
     "start": "webpack serve --config webpack/webpack.config.js --mode development",
-    "build": "webpack --config webpack/webpack.config.js --mode production"
+    "build": "webpack --config webpack/webpack.config.js --mode production",
+    "lint": "eslint ."
   },
   "eslintConfig": {
     "extends": [