ADD: added function to podcontroller to get number of childpods

include/kubecontrol/PodController.hpp

@@ -1,7 +1,9 @@
 #pragma once
 #include "kubecontrol/PodInfo.hpp"
+#include <cstddef>
 #include <kubecontrol/KubePod.hpp>
 #include <memory>
+#include <mutex>
 #include <string>
 #include <vector>
 
@@ -21,6 +23,7 @@ namespace kubecontrol
             std::string getPodsInfo();
             std::string getInfoForOwnPod();
             std::string getInfoForPod(std::string Label);
+            size_t getListOfChildPods();
 
             void checkPodsHierarchy();
 
@@ -43,6 +46,7 @@ namespace kubecontrol
             std::shared_ptr<PodInfo> getPodInfo(std::string uuid);
 
             std::vector<std::shared_ptr<PodInfo>> podsInfoList_;
+            mutable std::mutex mx_;
         
     };
 } // namespace ku