Remove lightning- prefix from schemas/*.json and doc/*.md files

[ShahanaFarooqui]

Changelog-Changed: Removed lightning- prefix from schemas/.json and doc/.md files.

[rustyrussell]

Look like this broke sql plugin completely? Might have to be deferred until next release?

[ShahanaFarooqui]

@endothermicdev While fixing other schema mappings, I realized that reckless wasn't being generated from its corresponding JSON schema. I’ve added the logic to correctly map it and generate the markdown and manpage from the JSON. I tried to copy all relevant information from the markdown to the JSON, but please double-check the information for accuracy.

[rustyrussell]

The .7 pages still need the lightning- prefix, as otherwise names are too general, unfortunately.

[ShahanaFarooqui]

This is the list of markdown pages (*.md). We are later prefixing lightning- to this list for generating MANPAGES.

[endothermicdev]

This is replacing the man page for the reckless tool with the schema conent (notes) for the plugin (which only passes through commands.) I think man page should still cover the tool, not the rpc access. We could add notes on reckless-rpc usage as well - I don't think there's enough content to warrant a second man page.

[rustyrussell]

Trivial rebase to fix flakes: we need to merge this ASAP to avoid merge hell.