chore: 添加Python项目通用的.gitignore文件

.gitignore

+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+build/
+dist/
+eggs/
+.eggs/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+*.egg
+MANIFEST
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache/
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+.ipynb_checkpoints/
+venv/
+.venv/
+env/
+ENV/
+.env
+.env.*
+pip-log.txt
+pip-delete-this-directory.txt
+.idea/
+.vscode/
+.DS_Store