Feature: getting started/user facing documentation

[acestronautical]

Documentation which is linked to from the main app. This should be something nicer than just a markdown file. We would like to have an explanation/breakdown of the different settings as well as how to fold/construct the various layout.

Some technology options:

• additional github pages page
• Mopidly
• docusaurus

[sithel]

Something that anonymous/unregistered users can comment on/interact with would be a Nice to Have Common questions we get on the main discord server are (to name just a few)

• rotation of pages (manual/duplex/"which way?"/"how can I?"/etc)
• page scaling of typeset (do we scale? / what page sizes should people typeset to? / etc) -- really we just need to better surface Lottie's doc/sheet
• they encounter OOM errors/long processing time -- what should they do?
• folding instructions
• the different concepts between "page" / "sheet" / "signature" / "folio" and what the settings mean in the Signature Format (non-Wacky) section

[sithel]

our main Discord users have contributed several write-ups, it would be GREAT if we could have a unified Link-Out-To section for them

[sithel]

This definitely seems related to Issue #59 -- I'm not really into reducing the UI, but the aim is the same and I feel there's something here about where we're putting different degrees of info (maybe we have different info popups? "beginner" tips vs "advanced" tips? )