refactor: move frontend in apps/frontend

apps/frontend/.storybook/main.js

@@ -0,0 +1,20 @@
+
+
+/** @type { import('@storybook/react-vite').StorybookConfig } */
+const config = {
+  "stories": [
+    "../src/**/*.mdx",
+    "../src/**/*.stories.@(js|jsx|mjs|ts|tsx)"
+  ],
+  "addons": [
+    "@chromatic-com/storybook",
+    "@storybook/addon-docs",
+    "@storybook/addon-a11y",
+    "@storybook/addon-vitest"
+  ],
+  "framework": {
+    "name": "@storybook/react-vite",
+    "options": {}
+  }
+};
+export default config;

apps/frontend/.storybook/preview.js

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+/** @type { import('@storybook/react-vite').Preview } */
+const preview = {
+  parameters: {
+    controls: {
+      matchers: {
+       color: /(background|color)$/i,
+       date: /Date$/i,
+      },
+    },
+
+    a11y: {
+      // 'todo' - show a11y violations in the test UI only
+      // 'error' - fail CI on a11y violations
+      // 'off' - skip a11y checks entirely
+      test: "todo"
+    }
+  },
+};
+
+export default preview;

apps/frontend/.storybook/vitest.setup.js

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+import * as a11yAddonAnnotations from "@storybook/addon-a11y/preview";
+import { setProjectAnnotations } from '@storybook/react-vite';
+import * as projectAnnotations from './preview.js';
+
+// This is an important step to apply the right configuration when testing your stories.
+// More info at: https://storybook.js.org/docs/api/portable-stories/portable-stories-vitest#setprojectannotations
+setProjectAnnotations([a11yAddonAnnotations, projectAnnotations]);