Add flag to show version

src/pycookiecheat/__main__.py

@@ -4,6 +4,7 @@
 import json
 import logging
 
+from importlib.metadata import version
 from .chrome import chrome_cookies
 from .common import BrowserType
 from .firefox import firefox_cookies
@@ -25,15 +26,21 @@ def main() -> None:
         help="Output to this file in netscape cookie file format",
     )
     parser.add_argument(
-        "--verbose",
         "-v",
+        "--verbose",
         action="count",
         default=0,
         help=(
             "Increase logging verbosity (may repeat), default is "
             "`logging.ERROR`"
         ),
     )
+    parser.add_argument(
+        "-V",
+        "--version",
+        action='version',
+        version=version(parser.prog),
+    )
     args = parser.parse_args()
 
     logging.basicConfig(level=max(logging.ERROR - 10 * args.verbose, 0))