Add icon to the connect button label

[0x2me]

It would be great if you could add a custom icon to the wallet connect button label. I know you can create a fully custom button, but I would like to use the default button and configure it with an icon. On many sites, the connect wallet button will have a little wallet icon next to it. It's useful for non-native web3 users to give them a visual representation of what the button does