Save spindle settings on maintenance screen exit

Signed-off-by: VladPavelescu <126763092+VladPavelescu@users.noreply.github.com>

Author: VladPavelescu

src/asmcnc/apps/maintenance_app/screen_maintenance.py

@@ -579,6 +579,7 @@ def __init__(self, **kwargs):
 
     def quit_to_lobby(self):
         self.on_tab_switch()
+        self.spindle_settings_widget.exit()
         self.sm.current = "lobby"
 
     def on_pre_enter(self):

src/asmcnc/apps/maintenance_app/widget_maintenance_spindle_settings.py

@@ -478,3 +478,7 @@ def update_font_size(self, value):
             value.font_size = 0.0275 * Window.width
         else:
             value.font_size = 0.03 * Window.width
+
+    def exit(self):
+        print("save spindle settings")
+        self.spindle_save_widget.save()