restructure more

ThirdParty/entt/testbed/system/imgui_system.cpp

@@ -0,0 +1,25 @@
+#include <component/input_listener_component.h>
+#include <component/rect_component.h>
+#include <component/renderable_component.h>
+#include <entt/davey/davey.hpp>
+#include <entt/entity/registry.hpp>
+#include <imgui.h>
+#include <system/imgui_system.h>
+
+namespace testbed {
+
+void imgui_system(const entt::registry &registry) {
+    ImGui::Begin("Davey - registry");
+    entt::davey(registry);
+    ImGui::End();
+
+    ImGui::Begin("Davey - view");
+    entt::davey(registry.view<renderable_component, rect_component>());
+    ImGui::End();
+
+    ImGui::Begin("Davey - storage");
+    entt::davey(*registry.storage<input_listener_component>());
+    ImGui::End();
+}
+
+} // namespace testbed