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/__init__.py

@@ -12,6 +12,7 @@ from mdrsclient.commands.mkdir import MkdirCommand
 from mdrsclient.commands.mv import MvCommand
 from mdrsclient.commands.rm import RmCommand
 from mdrsclient.commands.upload import UploadCommand
+from mdrsclient.commands.version import VersionCommand
 from mdrsclient.commands.whoami import WhoamiCommand
 
 __all__ = [
@@ -29,5 +30,6 @@ __all__ = [
     "MvCommand",
     "RmCommand",
     "UploadCommand",
+    "VersionCommand",
     "WhoamiCommand",
 ]