chore(grpc): add health check and grpc v1, alpha version

Signed-off-by: Bo-Yi.Wu <appleboy.tw@gmail.com>

routers/api/bots/handler.go

@@ -0,0 +1,18 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package bots
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/log"
+)
+
+func grpcHandler(h http.Handler) http.HandlerFunc {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		log.Info("Got connection: %v", r.Proto)
+		h.ServeHTTP(w, r)
+	})
+}