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/__version__.py

@@ -1,8 +1,5 @@
-import os
+from importlib.metadata import version
 
-here = os.path.realpath(os.path.dirname(__file__))
-
-with open(os.path.join(here, "VERSION")) as version_file:
-    __version__ = version_file.read().strip()
+__version__ = version("mdrs-client-python")
 
 __all__ = ["__version__"]