ADD: added tracklist update and systemstate update messages with tests and some improvements of simtrack

tests/test_DataClass.cpp

@@ -1,4 +1,5 @@
 
+#include <thread>
 #define CATCH_CONFIG_MAIN
 #include <catch2/catch.hpp>
 
@@ -24,7 +25,8 @@ SCENARIO("Testing the SimCore Sensor")
       THEN("check if Track attributes are correct")
       {
         REQUIRE(Name.getValue() == "hello world");
-        REQUIRE(Name.getValidity() == true);
+        REQUIRE(Name.isValid() == true);
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
         REQUIRE(Name.getWriteTime() < std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count());