build(deps-dev): add jampack for performance optimization (#46)

Add new package "jampack" to devDependencies to optimize performance for production build.

package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "dev": "astro dev",
     "start": "astro dev",
-    "build": "astro build",
+    "build": "astro build && jampack ./dist",
     "preview": "astro preview",
     "sync": "astro sync",
     "astro": "astro",
@@ -30,6 +30,7 @@
     "@astrojs/react": "^2.0.2",
     "@astrojs/sitemap": "^1.0.1",
     "@astrojs/tailwind": "^3.0.1",
+    "@divriots/jampack": "^0.9.4",
     "@tailwindcss/typography": "^0.5.9",
     "@types/github-slugger": "^1.3.0",
     "@types/react": "^18.0.27",