message: Add UI for easy common window size selection
diff: @@ -1476,6 +1476,30 @@ void MainWindow::buildMainMenuEdit()
  ImGui::EndMenu();
  }
  + ImGui::Separator();
  + if (ImGui::BeginMenu("Common Window Sizes")) {
  + const std::vector<vec2i> options = {{480, 270},
  + {960, 540},
  + {1280, 720},
  + {1920, 1080},
  + {2560, 1440},
  + {3840, 2160}};
  + for (auto &sizeChoice : options) {
  + char label[64];
  + snprintf(label,
  + sizeof(label),
  + "%s%d x %d",
  + windowSize == sizeChoice ? "*" : " ",
  + sizeChoice.x,
  + sizeChoice.y);
  + if (ImGui::MenuItem(label)) {
  + glfwSetWindowSize(glfwWindow, sizeChoice.x, sizeChoice.y);
  + reshape(sizeChoice);
  + }
  + }
  + ImGui::EndMenu();
  + }
  +
  if (ImGui::BeginMenu("Aspect Control")) {
  const float origAspect = lockAspectRatio;
  if (ImGui::MenuItem("Lock")) {
  