ui: Added on-screen search feature (issue #79)

* Use menu action "Edit -> Find in View" or Ctrl + D
* UI displayed as search bar at bottom of main window
* Hide search bar with ECS or close button
* Entering a query searches in name of graph nodes and code contents of code view
* Use Enter to iterate through matches, well move match into view in graph and code view
* Checkboxes allow for adding/removing results for certain views
* Create Bookmark shortcut is now CTRL + S

bug id = 79

src/lib/component/view/View.h

@@ -8,6 +8,7 @@
 #include "component/view/ViewLayout.h"
 
 class ViewWidgetWrapper;
+class ControllerProxy;
 
 class View
 {
@@ -43,6 +44,8 @@ protected:
 	void setWidgetWrapper(std::shared_ptr<ViewWidgetWrapper> widgetWrapper);
 
 private:
+	friend ControllerProxy;
+
 	Component* m_component;
 	ViewLayout* const m_viewLayout;
 	std::shared_ptr<ViewWidgetWrapper> m_widgetWrapper;