feat(ui): migrate to svelte-5 and storybook

packages/ui/.storybook/main.ts

@@ -0,0 +1,21 @@
+import type { StorybookConfig } from '@storybook/sveltekit';
+
+const config: StorybookConfig = {
+  "stories": [
+    "../src/**/*.stories.@(js|ts|svelte)"
+  ],
+
+  "addons": [
+    "@storybook/addon-svelte-csf",
+    "@storybook/addon-essentials",
+    "@storybook/addon-themes",
+  ],
+
+  "framework": {
+    "name": "@storybook/sveltekit",
+    "options": {}
+  },
+
+  docs: {}
+};
+export default config;