move user task handling into separate lib

lib/usercode/GwUserCode.h

@@ -0,0 +1,14 @@
+#ifndef _GWUSERCODE_H
+#define _GWUSERCODE_H
+#include <Arduino.h>
+class GwLog;
+class GwApi;
+class GwUserCode{
+    GwLog *logger;
+    GwApi *api;
+    public:
+        GwUserCode(GwApi *api);
+        void startUserTasks(int baseId);
+        void startAddonTask(String name,TaskFunction_t task, int id);
+};
+#endif