✨ Add sessions

src/window/session.py

@@ -32,6 +32,9 @@ class SessionWindow:
         self.list_in_session = []
 
     def open(self):
+        list = Config._CONFIG['session']
+        if list:
+            self.list_in_session = [DrawingElement(e) for e in list]
         self.update_session_list()
 
     def update_session_list(self):
@@ -155,6 +158,7 @@ class SessionWindow:
         self.window.destroy()
 
     def save_session(self):
+        Config._CONFIG['session'] = []
         for element in self.list_in_session:
             Config._CONFIG['session'].append(element.__dict__)
         Config.save()