ADD: support connecting additonal participants from participant

include/EventManager/Participant.hpp

@@ -135,6 +135,16 @@
       */
       bool isScheduledByManager() const {return isScheduledByManager_;}
 
+      /**
+      * @brief connect a new participant through another participant
+      */
+      void connect(std::shared_ptr<EventManager::Participant> participant);
+
+      /**
+      * @brief disconnect a participant through another participant
+      */
+      void disconnect(std::shared_ptr<EventManager::Participant> participant);
+
     public:
       /**
       * @brief Constructor setting the participant up for use

src/EventManager/Manager.cpp

@@ -331,3 +331,8 @@
    participant->setManager(shared_from_this());
    participant->init();
  }
+
+ void EventManager::Manager::disconnect(std::shared_ptr<EventManager::Participant> participant)
+ {
+   participant->setManager(nullptr);
+ }

src/EventManager/Participant.cpp

@@ -18,6 +18,25 @@ EventManager::Participant::Participant() : manager_(nullptr),
 
 }
 
+void EventManager::Participant::connect(std::shared_ptr<EventManager::Participant> participant)
+{
+  if (manager_ == nullptr)
+  {
+    throw std::runtime_error("no event manager set yet");
+  }
+  manager_->connect(participant);
+}
+
+void EventManager::Participant::disconnect(std::shared_ptr<EventManager::Participant> participant)
+{
+  if (manager_ == nullptr)
+  {
+    throw std::runtime_error("no event manager set yet");
+  }
+  manager_->disconnect(participant);
+}
+
+
 void EventManager::Participant::emit(std::shared_ptr<EventManager::Event> event)
 {
   {