Added in some unit tests

tests/README.md

@@ -0,0 +1,25 @@
+# MeshCore Tests
+
+## Running Tests
+
+To run the tests, first install the development dependencies:
+
+```bash
+pip install -e ".[dev]"
+```
+
+Then run the tests using pytest:
+
+```bash
+# Run all tests
+pytest
+
+# Run tests with verbose output
+pytest -v
+
+# Run a specific test file
+pytest tests/unit/test_commands.py
+
+# Run a specific test
+pytest tests/unit/test_commands.py::test_send_msg
+```