added imgui to the app

src/Input.cpp

@@ -1,6 +1,7 @@
 #include "Input.h"
 #include <iostream>
 #include <memory>
+#include "imgui/imgui-SFML.h"
 
 
 Input::Input() :
@@ -21,6 +22,8 @@ void Input::consume_sf_events(sf::RenderWindow *window) {
 
 	sf::Event e;
 	while (window->pollEvent(e)) {
+		
+		ImGui::SFML::ProcessEvent(e);
 		sf_event_queue.push_back(e);
 	}