Release of project in preparation for public launch.
### Changes
- Added licenses for documentation and tools
- Removed deprecated validator code
- Improved release job to publish package in project PyPi via twine
- Improved readability for text on coloured background in compliance report
## Known issues
* Mermaid diagram rendering is broken in the Compliance documentation
* Needs guidance on how to:
- Import existing requirements into a TSF graph
- Integrate TSF graphs from other projects
* Missing API reference pages for `trustable-compliance`
- Support for multi-repository usage of TSF is *experimental only* and
has a number of known issues (see compliance/remote.md#pitfalls)