fix(ls): rename --quick to --quiet; add version command; bump to 1.3.14

- Fix ls -q long option name: --quick → --quiet (typo fix)
- Remove mdrsclient/VERSION file; read version via importlib.metadata
- Bump version 1.3.13 → 1.3.14
- Add Python 3.14 to supported classifiers; promote to Development Status 4 - Beta
- Add `version` subcommand (prints "mdrs <version>")
- Document `version` command in README

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

mdrsclient/__main__.py

@@ -17,6 +17,7 @@ from mdrsclient.commands import (
     MvCommand,
     RmCommand,
     UploadCommand,
+    VersionCommand,
     WhoamiCommand,
 )
 from mdrsclient.exceptions import MDRSException
@@ -29,6 +30,7 @@ def main() -> None:
     parsers = parser.add_subparsers(title="subcommands")
 
     ConfigCommand.register(parsers)
+    VersionCommand.register(parsers)
     LoginCommand.register(parsers)
     LogoutCommand.register(parsers)
     WhoamiCommand.register(parsers)