[Feature] Add checklist for enabling modules to the install script

[mrcjkb]

No description provided.

[vhyrro]

Sounds like an interesting idea! Might be a little complicated to implement as we'd have to implement checkboxes in the installer but it would definitely be handy for newcomers.

[mrcjkb]

Yeah, I thought so.

The reason I jotted this down was because I woke up realising that if someone bootstraps rocks.nvim and then runs :Rocks sync on a new machine, it will report "could not parse" errors if the config has rocks-git plugins.
Not the end of the world - a second :Rocks sync would fix that (once we can actually load plugins after install), but also not ideal.

Some other ideas:

• Report that another :Rocks sync may be required if a handler gets added after sync.
• Special section for install/sync handler modules that gets treated specially (synced first).