Add is_palindrome function

Author: Mamtesh2001

strings/is_palindrome.py

@@ -0,0 +1,7 @@
+def is_palindrome(s: str) -> bool:
+    s = s.lower().replace(" ", "")
+    return s == s[::-1]
+
+if __name__ == "__main__":
+    print(is_palindrome("madam"))  # True
+    print(is_palindrome("hello"))  # False