chore: add empty project .eslintrc to disable Gatsby's eslint loaders (…

…#597)

.eslintrc.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright Zendesk, Inc.
+ *
+ * Use of this source code is governed under the Apache License, Version 2.0
+ * found at http://www.apache.org/licenses/LICENSE-2.0.
+ */
+
+/**
+ * Disables Gatsby's built-in eslint-loader called by `gatsby develop`.
+ * @see https://www.gatsbyjs.com/docs/how-to/custom-configuration/eslint/#disabling-eslint
+ * Rules required by Gatsby for fast-refresh are automatcally applied.
+ * @see https://github.com/gatsbyjs/gatsby/blob/gatsby%405.13.6/packages/gatsby/src/utils/webpack.config.js#L269
+ * @see https://github.com/gatsbyjs/gatsby/blob/gatsby%405.13.6/packages/gatsby/src/utils/webpack-utils.ts#L820-L846
+ * This does not interfere with this project ESLint V9's flat config.
+ */
+module.exports = {};