[WIP] Add Uni V3, stCelo, rstCelo, Algebra

[d-mooers]

Minima was recently taken offline due to changes in the regulatory landscape in the US. While we await clarity on the licenses required to run a router as a service, some entities on Celo find themselves needing a routing solution to replace Minima. To ensure that the Celo community still has access to a router than can handle most protocols on the network, Ill be adding some additional pairs here.

Minima is a bit different from Swappa, so these pairs will be largely written from scratch (save for the input-output math). Extra care should be taken when using these added pairs until they are fully vetted by community.

• Uni V3
• stCelo
• rstCelo
• Algebra (Ube V3)

[d-mooers]

This will be a pretty big pr - is it preferred for me to break this up into multiple PRs instead?

[zviadm]

This will be a pretty big pr - is it preferred for me to break this up into multiple PRs instead?

Hey, yes this is a massive diff and is very difficult to review. I think separating it into three PRs for different pairs would be a good start.

I think STCelo stuff should be very easy so i can review those quickly.
I am guessing Uni v3 one is the biggest one so would be best to have a way to review it separately.

[zviadm]

Thanks for the massive contribution, I am happy to get these stuff merged quickly, but still want to do at least a reasonable level of review here.

To help out with this, splitting this big diff into separate PRs for each Pair would be a good start. That way I can review and merge easier pairs quickly and spend a bit more time on more complex Uni v3 stuff.

[zviadm]

Fyi, I merged in stCelo and UniswapV3 stuff separately.
Just a heads up @d-mooers , there were bugs in both stCelo stuff and in UniswapV3 stuff too. UniswapV3 stuff is still not fully fixed, but I will take another pass at trying to fix it. Just a heads up in case you are using this code somewhere else too.

I don't know what the Algebra stuff is? Does it have any TVL? If it does, can consider merging that in too, otherwise can skip it.