Project site files upload

[DrDrij]

Files for the Jupinx GitHub pages project site.

[mmcky]

Thanks @DrDrij I have:

1. moved the site files to docs as the alternative location to serve the pages from. I think that will be better than the root level.
2. I have moved the sphinx documentation to docs/sphinx/
3. I have enabled GitHub Pages to serve the site from master branch docs

[mmcky]

• [ ] @mmcky to adjust readthedocs settings to render docs/sphinx