docs: first draft for the v4 sdk tech reference, overview tbd

[0xdevant]

First draft for the v4 SDK's Overview + Technical Reference

• typescript docgen based on v4 sdk repo
• I want to follow the format of v3 sdk docs as close as possible so I fixed some formatting issues e.g. extra title and texts, broken links in breadcrumbs, broken links to md for type-aliases etc
• updated wordings and fixed links in Overview

TBD: type aliases, variables and functions could be moved back to Tech Reference Overview like what v3 sdk did

[vercel]

@0xdevant is attempting to deploy a commit to the Uniswap Team on Vercel.

A member of the Team first needs to authorize it.

[saucepoint]

can we add the script & submodule so its reproducible

i.e.

https://github.com/Uniswap/docs/blob/main/scripts/v4-forge-doc.sh

https://github.com/Uniswap/docs/tree/main/submodules

[seeyijie]

Added script to generate docs!

There are still some links that needs to be manually edited (fixed manually by @0xdevant) because the copy and paste may have messed things up. The docs are complete but every time the script needs to be run, just need to manually check which link needs to be updated.