Fixed #3: Added sheerka.resolve_rule()

Fixed #5: Refactored SheerkaComparisonManager
Fixed #6: Sya parser no longer works after restart

src/core/sheerka/services/sheerka_service.py

@@ -40,3 +40,9 @@ class BaseService:
         for prop_name in args:
             if (value := self.sheerka.load_var(self.NAME, prop_name)) is not NotFound:
                 setattr(self, prop_name, value)
+
+    def store_var(self, context, var_name):
+        """
+        Store/record the value of an attribute
+        """
+        self.sheerka.record_var(context, self.NAME, var_name, getattr(self, var_name))