Add support for SEI network

[serrq]

This will be the next Solana.

It is a PoS consensus network with unbelievable performances.

It is the fastest blockchain in the world with its 380ms to get transaction finality. I tried it personally, very fast to move your assets and pay low fees. Some stablecoins issuers are getting in touch with SEI dev team to bring the fastest experience ever possible in the stablecoins industry.

Another excellent micro investment for the future. Currently one SEI coin costs 0.33$.

https://www.sei.io/