Add Cloudflare Workers configuration

Author: cloudflare-workers-and-pages[bot]

.gitignore

@@ -137,3 +137,8 @@ dist
 # Vite logs files
 vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
+
+# wrangler files
+.wrangler
+.dev.vars*
+!.dev.vars.example