Make installable by pip in editable mode

tests/test_main.py

@@ -0,0 +1,18 @@
+# test_main.py
+import pytest
+from click.testing import CliRunner
+from iottb.main import cli  # Adjust this import according to your project's structure
+
+
+@pytest.fixture
+def runner():
+    """Fixture to return a Click CliRunner instance."""
+    return CliRunner()
+
+
+def test_debug_option(runner):
+    """Test if the debug mode sets the appropriate flag in the context."""
+    result = runner.invoke(cli, ['--debug'])
+    assert result.exit_code == 0
+    # If debug mode affects logging or other behavior, validate those:
+    assert 'DEBUG mode on' in result.output