Add gitea manager reload-templates command (#24843)

This can be useful to update custom templates in production mode, when
they are updated frequently and a full Gitea restart each time is
disruptive.

modules/private/manager.go

@@ -29,6 +29,13 @@ func Restart(ctx context.Context) ResponseExtra {
 	return requestJSONClientMsg(req, "Restarting")
 }
 
+// ReloadTemplates calls the internal reload-templates function
+func ReloadTemplates(ctx context.Context) ResponseExtra {
+	reqURL := setting.LocalURL + "api/internal/manager/reload-templates"
+	req := newInternalRequest(ctx, reqURL, "POST")
+	return requestJSONClientMsg(req, "Reloaded")
+}
+
 // FlushOptions represents the options for the flush call
 type FlushOptions struct {
 	Timeout     time.Duration