EsLint v9 (#154)

* Upgrade ESLint and related configurations to version 9

- Update ESLint to version 9.19.0
- Migrate ESLint configurations to flat config format
- Remove deprecated ESLint config files
- Update package dependencies and configurations
- Simplify ESLint setup across packages
- Remove unnecessary ESLint config blocks from package.json files
- Improved CI caching with Turborepo tasks
- Removed duplicate styles

tooling/eslint/apps.js

@@ -1,29 +1,20 @@
-/** @type {import("eslint").Linter.Config} */
-const config = {
-  env: {
-    es2022: true,
-    node: true,
+export default [
+  {
+    files: ['**/*.{ts,tsx}'],
+    rules: {
+      'no-restricted-imports': [
+        'error',
+        {
+          paths: [
+            {
+              name: '@kit/supabase/database',
+              importNames: ['Database'],
+              message:
+                'Please use the application types from your app "~/lib/database.types" instead',
+            },
+          ],
+        },
+      ],
+    },
   },
-  parser: '@typescript-eslint/parser',
-  parserOptions: {
-    project: true,
-  },
-  plugins: ['@typescript-eslint', 'import'],
-  rules: {
-    'no-restricted-imports': [
-      'error',
-      {
-        paths: [
-          {
-            name: '@kit/supabase/database',
-            importNames: ['Database'],
-            message:
-              'Please use the application types from your app "~/lib/database.types" instead',
-          },
-        ],
-      },
-    ],
-  },
-};
-
-module.exports = config;
+];