ci(deploy): 改为 GitHub Webhook 触发部署

deploy/nginx-github-webhook.conf

@@ -0,0 +1,7 @@
+# 放入现有 laohang.space HTTPS server 块中。
+location = /github/webhook {
+    proxy_pass http://127.0.0.1:9001/github/webhook;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+}