feat: 基本HTTP服务器

- REST API: health用于检测服务器REST API正常运行

interval/server/http.go

@@ -0,0 +1,27 @@
+package server
+
+import (
+	"context"
+	"net/http"
+)
+
+type HTTPServer struct {
+	server *http.Server
+}
+
+func NewHTTPServer(addr string, handler http.Handler) *HTTPServer {
+	return &HTTPServer{
+		server: &http.Server{
+			Addr:    addr,
+			Handler: handler,
+		},
+	}
+}
+
+func (s *HTTPServer) Start() error {
+	return s.server.ListenAndServe()
+}
+
+func (s *HTTPServer) Shutdown(ctx context.Context) error {
+	return s.server.Shutdown(ctx)
+}