ADD settings menu to main game with go back feature

utils/stack.py

@@ -0,0 +1,22 @@
+class Stack:
+    def __init__(self):
+        self.stack = []
+
+    def push(self, item):
+        self.stack.append(item)
+
+    def pop(self):
+        if not self.is_empty():
+            return self.stack.pop()
+        raise IndexError("pop from empty stack")
+    
+    def peek(self):
+        if not self.is_empty():
+            return self.stack[-1]
+        raise IndexError("peek from empty stack")
+
+    def is_empty(self):
+        return len(self.stack) == 0
+
+    def size(self):
+        return len(self.stack)