Update project configuration and dependencies

- Added `.vscode` to `.gitignore` to exclude Visual Studio Code settings.
- Updated `pyproject.toml` to include `ruff` for linting and configured its settings.
- Modified `uv.lock` to include `ruff` in both optional and development dependencies.
- Refactored type hints in several files to use `str | None` for optional parameters.
- Cleaned up unused imports and whitespace in various modules for improved code clarity.

tests/test_models.py

@@ -1,8 +1,8 @@
 import json
 
 import pytest
-
 from conftest import FIXTURES, load
+
 from oxi.interfaces import device_registry
 
 MODEL_CASES = [