Introduce go chi web framework as frontend of macaron, so that we can move routes from macaron to chi step by step (#7420)

* When route cannot be found on chi, go to macaron

* Stick chi version to 1.5.0

* Follow router log setting

integrations/create_no_session_test.go

@@ -58,8 +58,8 @@ func TestSessionFileCreation(t *testing.T) {
 	oldSessionConfig := setting.SessionConfig.ProviderConfig
 	defer func() {
 		setting.SessionConfig.ProviderConfig = oldSessionConfig
-		mac = routes.NewMacaron()
-		routes.RegisterRoutes(mac)
+		c = routes.NewChi()
+		routes.RegisterRoutes(c)
 	}()
 
 	var config session.Options
@@ -83,8 +83,8 @@ func TestSessionFileCreation(t *testing.T) {
 
 	setting.SessionConfig.ProviderConfig = string(newConfigBytes)
 
-	mac = routes.NewMacaron()
-	routes.RegisterRoutes(mac)
+	c = routes.NewChi()
+	routes.RegisterRoutes(c)
 
 	t.Run("NoSessionOnViewIssue", func(t *testing.T) {
 		defer PrintCurrentTest(t)()