Add project gitignore

Author: q

.gitignore

@@ -0,0 +1,26 @@
+# Python bytecode and caches
+__pycache__/
+*.py[cod]
+*.mpy
+
+# Build and packaging output
+build/
+dist/
+*.egg-info/
+
+# Test and coverage output
+.coverage
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+
+# Local CircuitPython secrets and board files
+secrets.py
+settings.toml
+
+# Editor and OS files
+.DS_Store
+.idea/
+.vscode/
+*.swp
+*.swo