docs: add @shikiji/vitepress-twoslash

[sapphi-red]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:

Description

This PR adds @shikiji/vitepress-twoslash so that users can hover on the code and see the types.
Example with the vite docs: https://elk.zone/m.webtoo.ls/@sapphi_red/112131987169625108
https://rollup-git-fork-sapphi-red-docs-twoslash-rollup-js.vercel.app/plugin-development/#this-load

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Name	Status	Preview	Comments	Updated (UTC)
rollup	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 29, 2024 0:17am

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.80%. Comparing base (23d5282) to head (505cb9b).
Report is 8 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5445   +/-   ##
=======================================
  Coverage   98.80%   98.80%           
=======================================
  Files         236      237    +1     
  Lines        9423     9432    +9     
  Branches     2398     2398           
=======================================
+ Hits         9310     9319    +9     
  Misses         48       48           
  Partials       65       65           

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[lukastaegert]

This is truly amazing. Makes me wonder if we should start using adding doc comments in the docs, but I would only want to do that if I can then move the entire documentation into the types to avoid the duplicity. Not sure if this is worth it. Just some minor comments for the AMD section, but otherwise I do not see why we cannot merge this, this must have been a ton of work!

[sapphi-red]

Makes me wonder if we should start using adding doc comments in the docs, but I would only want to do that if I can then move the entire documentation into the types to avoid the duplicity.

Yeah, it would be nice to do that. But I haven't found a good way yet.

[github-actions]

This PR has been released as part of rollup@4.14.0. You can test it via npm install rollup.