Convert the existing RIPs from markdown to AsciiDoc.
Post conversion steps taken were:
- Re-order headers, reducing each level by 1
- Remove the hand crafted Table of Contents in favour of `:toc:`
- Change each from `Draft` to `Final`
- Add the type `Standard` to each
Introduce [lychee] link checking in the flake.nix checks.
Since `nix flake check` is limited by sandboxing, it only checks for
internal links.
Running `lychee` from the directory will check external links.
In the future, this can be done via git hooks.
[lychee]: https://github.com/lycheeverse/lychee
Fintan Halpenny