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/commands/version.py

@@ -0,0 +1,20 @@
+from argparse import Namespace
+from typing import Any
+
+from mdrsclient.__version__ import __version__
+from mdrsclient.commands.base import BaseCommand
+
+
+class VersionCommand(BaseCommand):
+    @classmethod
+    def register(cls, parsers: Any) -> None:
+        version_parser = parsers.add_parser("version", help="show the version of this tool")
+        version_parser.set_defaults(func=cls.func)
+
+    @classmethod
+    def func(cls, args: Namespace) -> None:
+        cls.version()
+
+    @classmethod
+    def version(cls) -> None:
+        print(f"mdrs {__version__}")