Added first version of DebugManager. Implemented draft of the rule engine

src/core/sheerka/services/sheerka_service.py

@@ -10,6 +10,7 @@ class BaseService:
     """
     Base class for services
     """
+
     def __init__(self, sheerka):
         self.sheerka = sheerka
 
@@ -19,3 +20,13 @@ class BaseService:
         :return:
         """
         pass
+
+    def restore_values(self, *args):
+        """
+        Use Variable Manager to restore the state of a service
+        :param args:
+        :return:
+        """
+        for prop_name in args:
+            if (value := self.sheerka.load_var(self.NAME, prop_name)) is not None:
+                setattr(self, prop_name, value)