feat: 基本HTTP服务器

- REST API: health用于检测服务器REST API正常运行

interval/api/router.go

@@ -0,0 +1,16 @@
+package api
+
+import (
+	"net/http"
+
+	"git.jinshen.cn/remilia/push-server/interval/api/handler"
+	"github.com/go-chi/chi/v5"
+)
+
+func NewRouter() http.Handler {
+	r := chi.NewRouter()
+
+	r.Post("/health", handler.Health)
+
+	return r
+}