Feature Request: Add to the main README.md the location of the main wallets when running a localnet

[FidelVe]

Hello team.

To improve dev experience I suggest to add the location of the mnemonics of the main wallets for the localnet.

When running a localnet one of the first thing a developer need is access to balance in order to do any tests regarding transactions and deployments of contracts etc, I had to search a lot to find that the default mnemonics for the wallets with all the required balance are in the following file https://github.com/archway-network/archway/blob/main/scripts/localnet.sh

Adding a quick note indicating where this wallets are or describing a way to access balance when using the localnet will help improve the developer experience when using the localnet.