Move eslint and stylelint configs to package.json

.eslintrc

@@ -1,43 +0,0 @@
-{
-  "root": true,
-  "extends": "eslint:recommended",
-  "globals": {
-    "wp": true
-  },
-  "env": {
-    "node": true,
-    "es6": true,
-    "amd": true,
-    "browser": true,
-    "jquery": true
-  },
-  "parserOptions": {
-    "ecmaFeatures": {
-      "globalReturn": true,
-      "generators": false,
-      "objectLiteralDuplicateProperties": false,
-      "experimentalObjectRestSpread": true
-    },
-    "ecmaVersion": 2017,
-    "sourceType": "module"
-  },
-  "plugins": [
-    "import",
-  ],
-  "settings": {
-    "import/core-modules": [],
-    "import/ignore": [
-      "node_modules",
-      "\\.(coffee|scss|css|less|hbs|svg|json)$"
-    ]
-  },
-  "rules": {
-    "comma-dangle": ["error", {
-      "arrays": "always-multiline",
-      "objects": "always-multiline",
-      "imports": "always-multiline",
-      "exports": "always-multiline",
-      "functions": "ignore"
-    }]
-  }
-}

.stylelintrc

@@ -1,3 +0,0 @@
-{
-  "extends": "stylelint-config-standard"
-}

package.json

@@ -22,6 +22,55 @@
     "android 4",
     "opera 12"
   ],
+  "eslintConfig": {
+    "root": true,
+    "extends": "eslint:recommended",
+    "globals": {
+      "wp": true
+    },
+    "env": {
+      "node": true,
+      "es6": true,
+      "amd": true,
+      "browser": true,
+      "jquery": true
+    },
+    "parserOptions": {
+      "ecmaFeatures": {
+        "globalReturn": true,
+        "generators": false,
+        "objectLiteralDuplicateProperties": false,
+        "experimentalObjectRestSpread": true
+      },
+      "ecmaVersion": 2017,
+      "sourceType": "module"
+    },
+    "plugins": [
+      "import"
+    ],
+    "settings": {
+      "import/core-modules": [],
+      "import/ignore": [
+        "node_modules",
+        "\\.(coffee|scss|css|less|hbs|svg|json)$"
+      ]
+    },
+    "rules": {
+      "comma-dangle": [
+        "error",
+        {
+          "arrays": "always-multiline",
+          "objects": "always-multiline",
+          "imports": "always-multiline",
+          "exports": "always-multiline",
+          "functions": "ignore"
+        }
+      ]
+    }
+  },
+  "stylelint": {
+    "extends": "stylelint-config-standard"
+  },
   "scripts": {
     "build": "webpack --progress --config resources/assets/build/webpack.config.js",
     "build:production": "webpack --progress -p --config resources/assets/build/webpack.config.js",