Overhaul without breaking existing functionality

[Vlix]

Mainly focused on adding long requested things (Status 451, HTTP/3.0, some pattern synonyms), small documentation updates, and using Data.Word8 to not be working with hardcoded numbers.

The point was to not break or change any existing functionality, though I did opt to prepare for a major version bump because we're now re-exporting everything from the main module, which might cause some warnings or maybe even errors in user code.

[Vlix]

Resolves issues:

• Add status 451 #7
• Rendering of various types (Headers, Version, etc) #9 and Maybe add pattern synonyms for convenience? #14 for Versions
• Add support for HTTP/3 version #11

[Vlix]

Ok, something is wrong with the doctests it seems 🤔

[Vlix]

Note to self:

• fix doctests on cabal
• Change toBS to B.intDec in renderHttpVersion
• Revert re-export of everything from Network.HTTP.Types (and adjust README) to be able to make a minor version upgrade first and add all the re-exporting to publish a major version upgrade.