[nostalgia] Collapse NostalgiaCore down to a single library and cleanup impl data access

src/nostalgia/core/glfw/gfx.cpp

@@ -16,18 +16,14 @@ namespace nostalgia::core {
 constexpr auto Scale = 5;
 
 static void handleGlfwError(int err, const char *desc) noexcept {
-    oxErrf("GLFW error ({}): {}\n", err, desc);
-}
-
-void ImGui_Impl_NewFrame() noexcept {
-	ImGui_ImplGlfw_NewFrame();
+	oxErrf("GLFW error ({}): {}\n", err, desc);
 }
 
 static void handleKeyPress(Context *ctx, int key) noexcept {
 	switch (key) {
 		case GLFW_KEY_ESCAPE:
 		case GLFW_KEY_Q:
-			shutdown(ctx);
+			oxIgnoreError(shutdown(ctx));
 			break;
 		default:
 			break;
@@ -41,6 +37,10 @@ static void handleGlfwKeyEvent(GLFWwindow *window, int key, int, int action, int
 	}
 }
 
+void ImGui_Impl_NewFrame() noexcept {
+	ImGui_ImplGlfw_NewFrame();
+}
+
 ox::Error initGfx(Context *ctx) noexcept {
 	auto id = ctx->windowerData<GlfwImplData>();
 	glfwSetErrorCallback(handleGlfwError);