feat!: add pagefind for static search (#458)

Replace React with pagefind for static site search

package.json

@@ -4,7 +4,7 @@
   "version": "0.0.1",
   "scripts": {
     "dev": "astro dev",
-    "build": "astro check && astro build",
+    "build": "astro check && astro build && pagefind --site dist && cp -r dist/pagefind public/",
     "preview": "astro preview",
     "astro": "astro",
     "format:check": "prettier --check .",
@@ -27,12 +27,14 @@
   },
   "devDependencies": {
     "@astrojs/check": "^0.9.4",
+    "@pagefind/default-ui": "^1.3.0",
     "@tailwindcss/typography": "^0.5.16",
     "@types/lodash.kebabcase": "^4.1.9",
     "@typescript-eslint/parser": "^8.25.0",
     "eslint": "^9.21.0",
     "eslint-plugin-astro": "^1.3.1",
     "globals": "^16.0.0",
+    "pagefind": "^1.3.0",
     "prettier": "^3.5.2",
     "prettier-plugin-astro": "^0.14.1",
     "prettier-plugin-tailwindcss": "^0.6.11",