Tracking Issue for poise-in-serenity

[GnomedDev]

We are currently trying to merge poise into serenity, to replace the standard framework for 0.13+. This entails quite a bit of rework to make sure that the state of poise matches serenity. This is the issue to track that effort.

Goals

• Remove as much of poise that is not a command framework as possible
• Remove unmaintained code, or split it off
• Remove as much magic as possible

Progress

• Remove user data setup (done, serenity-next)
• Remove autocomplete magic (done, next, Remove magic from autocomplete #312)
• Audit and cleanup Command (allocations, etc)
• Audit and cleanup FrameworkOptions
• Remove autoref specialisation for command handling, just use traits like everyone else
• Remove help command infrastructure, as this is not needed for current/next and should be split out into a separate crate fo a bit