gh-62 Added donna version command that prints the version of the tool

.gitignore

@@ -207,4 +207,5 @@ __marimo__/
 
 *~
 .venv-donna
-# .donna/session/ commented to easier navigate artifacts
+# .donna/session/ commented to easier navigate artifacts
+.donna/tmp

changes/unreleased.md

@@ -1,2 +1,2 @@
 
-No changes.
+- gh-62 Added `donna version` command that prints the version of the tool.

donna/cli/__main__.py

@@ -2,6 +2,7 @@
 from donna.cli.commands import artifacts  # noqa: F401
 from donna.cli.commands import journal  # noqa: F401
 from donna.cli.commands import sessions  # noqa: F401
+from donna.cli.commands import version  # noqa: F401
 from donna.cli.commands import workspaces  # noqa: F401
 
 app()

donna/cli/commands/version.py

@@ -0,0 +1,10 @@
+import importlib.metadata
+
+import typer
+
+from donna.cli.application import app
+
+
+@app.command(help="Print the current Donna package version.")
+def version() -> None:
+    typer.echo(importlib.metadata.version("donna"))