[nostalgia] Update Studio to handle tabs and open directory dialog on Mac, Update core::init

src/nostalgia/studio/lib/editor.cpp

@@ -12,6 +12,10 @@
 
 namespace nostalgia::studio {
 
+ox::String Editor::itemDisplayName() const {
+	return itemName();
+}
+
 void Editor::cut() {
 }
 
@@ -24,9 +28,13 @@ void Editor::paste() {
 void Editor::exportFile() {
 }
 
+void Editor::close() {
+	this->closed.emit(itemName());
+}
+
 void Editor::save() {
-    saveItem();
-    setUnsavedChanges(false);
+	saveItem();
+	setUnsavedChanges(false);
 }
 
 void Editor::setUnsavedChanges(bool uc) {