[Deno Deploy] Add .github/workflows/deploy.yml

Author: deno-deploy[bot]

.github/workflows/deploy.yml

@@ -30,5 +30,5 @@ jobs:
         uses: denoland/deployctl@v1
         with:
           project: "fresh-reverse-proxy-middle"
-          entrypoint: "/main.ts"
+          entrypoint: "./main.ts"
           root: ""