Rsazure-openai-toolkit

Fixed
- Missing `.j2` templates in the distributed package, causing `rschat-tools samples` to crash on installed versions.

Changed
- Bumped version to 0.3.1
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Added
- New CLI utility `rschat-tools` for developer-facing features
- `samples` subcommand to generate usage examples with ready-to-run code
- Templates for:
- Basic usage
- Advanced usage (chat loop without `.env`)
- Env usage (`.env` + basic script)
- Env + advanced usage (`.env` + chat loop)
- `Jinja2` added as a new dependency for template rendering

Changed
- Bumped version to 0.3.0
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Added
- New CLI entrypoint `rschat` to interact with Azure OpenAI from the terminal
- CLI documentation section in README
- Environment variable validation in CLI

Changed
- Bumped version to 0.2.0
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Changed
- Improved `README.md` with detailed badges and sections
- Added `SECURITY.md` file and linked in `pyproject.toml`
- Updated project metadata (`project.urls`) in `pyproject.toml`
- Bumped version to 0.1.3
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Added
- Included `SECURITY.md` policy
- Added missing URLs to `pyproject.toml` for better PyPI visibility

Changed
- Bumped version to 0.1.2
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Fixed
- Import path issue in `handler.py`

Added
- Initial GitHub Actions CI with basic install/import test

Changed
- Bumped version to 0.1.1
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