feat: setup storybook for glyphdiff project

package.json

@@ -15,20 +15,32 @@
     "format": "dprint fmt",
     "format:check": "dprint check",
     "test:e2e": "playwright test",
-    "test": "npm run test:e2e"
+    "test": "npm run test:e2e",
+    "storybook": "storybook dev -p 6006",
+    "build-storybook": "storybook build"
   },
   "devDependencies": {
+    "@chromatic-com/storybook": "^4.1.3",
     "@internationalized/date": "^3.10.0",
     "@lucide/svelte": "^0.561.0",
     "@playwright/test": "^1.57.0",
+    "@storybook/addon-a11y": "^10.1.11",
+    "@storybook/addon-docs": "^10.1.11",
+    "@storybook/addon-svelte-csf": "^5.0.10",
+    "@storybook/addon-vitest": "^10.1.11",
+    "@storybook/svelte-vite": "^10.1.11",
     "@sveltejs/vite-plugin-svelte": "^6.2.1",
     "@tailwindcss/vite": "^4.1.18",
     "@tsconfig/svelte": "^5.0.6",
+    "@vitest/browser-playwright": "^4.0.16",
+    "@vitest/coverage-v8": "^4.0.16",
     "bits-ui": "^2.14.4",
     "clsx": "^2.1.1",
     "dprint": "^0.50.2",
     "lefthook": "^2.0.13",
     "oxlint": "^1.35.0",
+    "playwright": "^1.57.0",
+    "storybook": "^10.1.11",
     "svelte": "^5.45.6",
     "svelte-check": "^4.3.4",
     "svelte-language-server": "^0.17.23",
@@ -37,6 +49,7 @@
     "tailwindcss": "^4.1.18",
     "tw-animate-css": "^1.4.0",
     "typescript": "^5.9.3",
-    "vite": "^7.2.6"
+    "vite": "^7.2.6",
+    "vitest": "^4.0.16"
   }
 }