Add docs and CI/CD workflows

tests/test_cli.py

@@ -0,0 +1,13 @@
+
+import os, sys
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
+
+from voxvera.cli import main
+import pytest
+
+
+def test_help(capsys):
+    with pytest.raises(SystemExit):
+        main(["-h"])
+    captured = capsys.readouterr()
+    assert "usage:" in captured.out