impr: Make close button on macOS close providers if any are open instead of closing ImHex

lib/libimhex/include/hex/api/events/events_lifecycle.hpp

@@ -12,6 +12,13 @@ namespace hex {
      */
     EVENT_DEF(EventImHexStartupFinished);
 
+    /**
+     * @brief Called when the user presses the close button on the main window
+     *
+     * This is currently only used and implemented on macOS
+     */
+    EVENT_DEF(EventCloseButtonPressed);
+
     /**
      * @brief Called when ImHex is closing, to trigger the last shutdown hooks
      *

lib/libimhex/source/helpers/utils.cpp

@@ -822,10 +822,7 @@ namespace hex {
     }
 
     extern "C" void macOSCloseButtonPressed() {
-        auto windowHandle = ImHexApi::System::getMainWindowHandle();
-
-        glfwHideWindow(windowHandle);
-        glfwIconifyWindow(windowHandle);
+        EventCloseButtonPressed::post();
     }
 
     extern "C" void macosEventDataReceived(const u8 *data, size_t length) {