Add tooltip text to Polygon3DEditor buttons

Author: Giganzo

editor/plugins/polygon_3d_editor_plugin.cpp

@@ -535,12 +535,14 @@ Polygon3DEditor::Polygon3DEditor() {
 
 	button_create = memnew(Button);
 	button_create->set_theme_type_variation(SceneStringName(FlatButton));
+	button_create->set_tooltip_text(TTR("Create Polygon"));
 	add_child(button_create);
 	button_create->connect(SceneStringName(pressed), callable_mp(this, &Polygon3DEditor::_menu_option).bind(MODE_CREATE));
 	button_create->set_toggle_mode(true);
 
 	button_edit = memnew(Button);
 	button_edit->set_theme_type_variation(SceneStringName(FlatButton));
+	button_edit->set_tooltip_text(TTR("Edit Polygon"));
 	add_child(button_edit);
 	button_edit->connect(SceneStringName(pressed), callable_mp(this, &Polygon3DEditor::_menu_option).bind(MODE_EDIT));
 	button_edit->set_toggle_mode(true);