feat: getNetworkName

[fadeev]

There is no standard for chain labels, so:

getNetworkName("mumbai_network") // => "mumbai_testnet"
getNetworkName("MuMbaI-tESTnet") // => "mumbai_testnet"

For example, viem, which is used by wagmi, which is used by Rainbow Kit calls Polygon Mumbai maticmum 🫠

We might make this smarter, by checking for -testnet and -network automatically, but we'll still have to keep wierd names like above.