test: Add tests directory to migrate unit tests to project

tests/test_import.py

@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+"""Test module import."""
+# SPDX-FileCopyrightText: 2023 Sven Sager
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+import unittest
+
+
+class ModuleImport(unittest.TestCase):
+    def test_import(self):
+        """Test the import of the module."""
+        import revpimodio2
+
+        self.assertEqual(type(revpimodio2.__version__), str)