build: update JS linting standards

.eslintrc.js

@@ -1,12 +0,0 @@
-module.exports =  {
-  env: {
-  	browser: true,
-  	jquery: true,
-  	es6: true
-  },
-  extends:  [
-    'wordpress',
-    'plugin:prettier/recommended',  // Enables eslint-plugin-prettier and displays prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
-  ],
-  rules:  {},
-};

.eslintrc.json

@@ -0,0 +1,14 @@
+{
+  "env": {
+    "browser": true,
+    "jquery": true,
+    "es6": true
+  },
+  "extends":  [
+    "plugin:@wordpress/eslint-plugin/esnext",
+    "plugin:@wordpress/eslint-plugin/jsdoc",
+    "plugin:@wordpress/eslint-plugin/i18n",
+    "plugin:prettier/recommended"
+  ],
+  "rules":  {}
+}

.gitignore

@@ -79,7 +79,7 @@ tmp/
 
 !.editorconfig
 !.phpcs.xml.dist
-!.eslintrc.js
+!.eslintrc.json
 !.eslintignore
 !.php-commitizen.php
 !.prettierignore

package.json

@@ -41,10 +41,10 @@
     ]
   },
   "devDependencies": {
+    "@wordpress/eslint-plugin": "^9.0.3",
     "cz-conventional-changelog": "^3.3.0",
     "eslint": "^7.24.0",
     "eslint-config-prettier": "^8.2.0",
-    "eslint-config-wordpress": "^2.0.0",
     "eslint-plugin-prettier": "^3.4.0",
     "husky": "^4.3.8",
     "lint-staged": "^10.5.4",