feat(rules): add decorator: aliases for class attribute property

hrc/rules/__init__.py

@@ -1,3 +1,4 @@
+import functools
 from typing import Generic, Any, Type
 
 from abc import ABC
@@ -8,5 +9,11 @@
 
 class Rules(ABC, Generic[RulesT]):
     ...
-
-
+
+
+def aliases(names, ignore_case=False):
+    def decorator(func):
+        func._aliases = names
+        func._ignore_case = ignore_case
+        return func
+    return decorator