basic imgui integration

src/peripherals_glfw.cpp

@@ -72,4 +72,8 @@ bool peripherals_glfw::should_close() {
     return glfwWindowShouldClose(window);
 }
 
+GLFWwindow *peripherals_glfw::get_window() const {
+    return window;
+}
+
 END_NAMESPACE

src/peripherals_glfw.h

@@ -13,6 +13,7 @@ public:
 	void swap_buffers() override;
     void poll_events() override;
 	bool should_close() override;
+    GLFWwindow* get_window() const;
 
 	::GLFWwindow *window;
 };