As per the title add support for Add support for Flare and Songbird networks.
Both are EVM compatible so should be straight forward to integrate.
Block explorer for Songbird:- https://songbird.explorer.flare.network
Flare not launched yet but info below on testnet and API construct
- API Docs: web3.js - Ethereum JavaScript API β web3.js 1.0.0 documentation
- Block Explorer: https://explorer.flare.network/