feat(ui): introduces storybook

- adds the necessary dependencies and configuration for Storybook.
- refactors the `Button` component and adds some stories for it.

pkgs/clan-app/ui/.storybook/preview.ts

@@ -0,0 +1,25 @@
+import type { Preview } from "@kachurun/storybook-solid";
+
+export const preview: Preview = {
+  tags: ["autodocs"],
+  parameters: {
+    docs: { toc: true },
+    backgrounds: {
+      values: [
+        { name: "Dark", value: "#333" },
+        { name: "Light", value: "#F7F9F2" },
+      ],
+      default: "Light",
+    },
+    // automatically create action args for all props that start with "on"
+    actions: { argTypesRegex: "^on.*" },
+    controls: {
+      matchers: {
+        color: /(background|color)$/i,
+        date: /Date$/,
+      },
+    },
+  },
+};
+
+export default preview;