Initial commit with Llama API client and docs

Add Python scripts for Llama API chat clients, endpoint testing, and quick tests. Include documentation (README, CONTRIBUTING, 操作指南), license, and .gitignore. Supports multiple endpoints and models for OpenAI-compatible Llama API usage.

.gitignore

@@ -0,0 +1,102 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Virtual environments
+venv/
+ENV/
+env/
+.venv/
+.env
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Project specific
+*.log
+*.tmp
+temp/
+tmp/
+logs/
+output/
+
+# API keys and secrets (if stored in separate config)
+config.ini
+secrets.json
+.env.local
+.env.production
+
+# Test outputs
+test_results/
+*.test.txt
+
+# Backup files
+*.bak
+*.backup
+*.old
+
+# Windows
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Linux
+.directory
+.Trash-*