Create a GitHub Pages documentation site for CodeSnip Vault

[delphidabbler]

Issue #56 proposed a GitHub pages docs site for CodeSnip 4. This was rejected as too much work.

If it reaches release CodeSnip Vault will require a major overhaul of the existing help system. It may be almost as easy to make the move to online help at that point.

The online https://htmlmarkdown.com/ HTML to Markdown converter may be useful.