feat(site-2): Split docs (#8435)
* Update links
* Move blog to site/content
* Update site/content/docs/02-component-format.md
* Fix docs links
* Add global prettierrc
* Auto format
* Fix git merge artifact
* Fix errors
* Update html to svelte(remaining ones)
* Add 2 blog posts
* Modify prettierrc
* Minor design fix
* Switch package lock to spaces, prettier ignore
* Regenerate package lock
* prettier format
* Push
* Remove console.logs
* Minor fixes
* Fix search
* Fix heading <code> style
* Fix search some more
* Code cleanup
* Update deps
* Move content around
* Allow drafts
* Redirect logic
* Don't render anything on docs if /docs
* Shorten the regex patterns
* Fix some more
* Hack the build into working
* Modernize docs links
* Add content to introduction
* Modify the content
* fix content links
* Reduce duplication in redirect regex
* Differences from Kit page
* Fix link
* Make OnThisPage visible on all docs
* Misc changes
* Move differences page to introduction
* Run prettier
* Prerender examples api routes
* Modify introdution page
* replace positions of readonly and get
* Minor blog style enhancement
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Co-authored-by: Rich Harris <richard.a.harris@gmail.com>