cli: Add -V alias for --version

This is quite common in Python world

Author: antonio-rojas

src/sage/cli/version_cmd.py

@@ -18,6 +18,7 @@ def extend_parser(parser: argparse.ArgumentParser):
         - the extended parser.
         """
         parser.add_argument(
+            "-V",
             "--version",
             action="version",
             version=version,