Add function to count calls with caller information

Implements a function to count calls and track callers.

Author: gamzeklnc

Week04/fn_w_counter_gamze_kilinc.py

@@ -0,0 +1,17 @@
+def fn_w_counter() -> tuple[int, dict[str, int]]:
+    """
+    Counts function calls with caller information.
+
+    :return: A tuple containing total call count and a dictionary
+             mapping caller names to their call counts.
+    """
+    if not hasattr(fn_w_counter, "_total_calls"):
+        fn_w_counter._total_calls = 0
+        fn_w_counter._callers = {}
+
+    caller = __name__
+
+    fn_w_counter._total_calls += 1
+    fn_w_counter._callers[caller] = fn_w_counter._callers.get(caller, 0) + 1
+
+    return fn_w_counter._total_calls, fn_w_counter._callers