Angreal

VirtualEnv` integration got some updated behaviors:
- `requirements` no longer needs to be a file but can be a list of packages or a single package.
- `venv_required` takes a `requirements` arg.

- Adds python virtual environment integrations
- venv_required decorator
- venv_creation / activation functions
- Adds git integration - requires git CLI available on root machine
- Adds ability to add a folder to `~/.angrealrc` for execution via `angreal init folder_name`.

New Contributors
* rodrigogiraoserrao made their first contribution in https://github.com/angreal/angreal/pull/23

**Full Changelog**: https://github.com/angreal/angreal/compare/2.0.1...2.0.2

- Adds additional windows based tests to our CI/CD pipeline
- Adds a positive message on successful execution of angreal init
- Introduces a number of debug level messages into init.rs
- Solves a bug in windows where the carriage return was causing fs::make_dir to fail
- Added doc strings and concrete args/kwargs to the python api as needed to ensure we have the ability to extract to documentation.