Impl cloudflare wrangler

- Add astro cloudlfare plugin
- Generate cloudflare deploy configs

Signed-off-by: Asai Neko <sugar@sne.moe>

astro.config.mjs

@@ -3,6 +3,8 @@ import { defineConfig } from 'astro/config';
 import starlight from '@astrojs/starlight';
 import mdx from '@astrojs/mdx';
 
+import cloudflare from '@astrojs/cloudflare';
+
 // https://astro.build/config
 export default defineConfig({
     integrations: [
@@ -35,4 +37,6 @@ export default defineConfig({
         }),
         mdx(),
     ],
+
+    adapter: cloudflare(),
 });