feat: support flat config

This change adds support for the new flat config format.  In order to import from json, I had to add the rollup json plugin to the rollup build script.  I also updated the README to include usage examples.

Example usage:
```js
export default [
 {
    files: ['**/*.{js,jsx}'],
    languageOptions: {
      ecmaVersion: 2020,
      globals: globals.browser,
      parserOptions: {
        ecmaVersion: 'latest',
        ecmaFeatures: {jsx: true},
        sourceType: 'module',
      },
    },
    settings: {react: {version: '18.3'}},
    ...reactHooks.flatConfigs.recommended,
  },
];
```

Author: michaelfaith

packages/eslint-plugin-react-hooks/README.md

@@ -18,7 +18,9 @@ npm install eslint-plugin-react-hooks --save-dev
 yarn add eslint-plugin-react-hooks --dev
 ```
 
-Then extend the recommended eslint config:
+### Legacy Config (.eslintrc)
+
+Extend the recommended eslint config:
 
 ```js
 {
@@ -29,10 +31,25 @@ Then extend the recommended eslint config:
 }
 ```
 
+### Flat Config (eslint.config.js)
+
+Add the recommended config
+
+```js
+import reactHooks from 'eslint-plugin-react-hooks';
+
+export default [
+  // ...
+  reactHooks.flatConfigs.recommended,
+];
+```
+
 ### Custom Configuration
 
 If you want more fine-grained configuration, you can instead add a snippet like this to your ESLint configuration file:
 
+#### Legacy Config (.eslintrc)
+
 ```js
 {
   "plugins": [
@@ -47,6 +64,23 @@ If you want more fine-grained configuration, you can instead add a snippet like
 }
 ```
 
+#### Flat Config (eslint.config.js)
+
+```js
+import reactHooks from 'eslint-plugin-react-hooks';
+
+export default [
+  {
+    files: ['**/*.{js,jsx}'],
+    plugins: { 'react-hooks': reactHooks },
+    // ...
+    rules: {
+      'react-hooks/rules-of-hooks': 'error',
+      'react-hooks/exhaustive-deps': 'warn',
+    }
+  },
+];
+```
 
 ## Advanced Configuration
 

packages/eslint-plugin-react-hooks/src/index.js

@@ -10,17 +10,45 @@
 import RulesOfHooks from './RulesOfHooks';
 import ExhaustiveDeps from './ExhaustiveDeps';
 
+const {name, version} = require('../package.json');
+
+// All rules
+export const rules = {
+  'rules-of-hooks': RulesOfHooks,
+  'exhaustive-deps': ExhaustiveDeps,
+};
+
+// Rule configs
+const configRules = {
+  'react-hooks/rules-of-hooks': 'error',
+  'react-hooks/exhaustive-deps': 'warn',
+};
+
+// Legacy configs
 export const configs = {
   recommended: {
     plugins: ['react-hooks'],
-    rules: {
-      'react-hooks/rules-of-hooks': 'error',
-      'react-hooks/exhaustive-deps': 'warn',
-    },
+    rules: configRules,
   },
 };
 
-export const rules = {
-  'rules-of-hooks': RulesOfHooks,
-  'exhaustive-deps': ExhaustiveDeps,
+// Base plugin object
+const reactHooksPlugin = {
+  meta: {name, version},
+  rules,
+};
+
+// Flat configs
+export const flatConfigs = {
+  recommended: {
+    name: 'react-hooks/recommended',
+    plugins: {'react-hooks': reactHooksPlugin},
+    rules: configRules,
+  },
+};
+
+export default {
+  ...reactHooksPlugin,
+  configs,
+  flatConfigs,
 };