Update ConditionHandler class in conditions.py

Defined new instance attribute `_logical_method_map` mapping operator
names with corresponding evaluation methods. Also updated `__slots__`
with the same.

fise/query/conditions.py

@@ -268,7 +268,7 @@ class ConditionHandler:
     query conditions for search and delete operations.
     """
 
-    __slots__ = "_conditions", "_method_map"
+    __slots__ = "_conditions", "_method_map", "_logical_method_map"
 
     def __init__(self, subquery: list[str], entity: int) -> None:
         """
@@ -279,6 +279,12 @@ def __init__(self, subquery: list[str], entity: int) -> None:
         - entity (int): Entity being operated upon.
         """
 
+        # Maps logical operators with corresponding evaluation methods.
+        self._logical_method_map: dict[str, Callable[[bool, bool], bool]] = {
+            "and": self._and,
+            "or": self._or,
+        }
+
         # Maps operator notations with corresponding evaluation methods.
         self._method_map: dict[str, Callable[[Any, Any], bool]] = {
             ">=": self._ge,