Add coin/network icons font

[sondreb]

• The account and default account (on new wallets) only lists our selection of available Material icons at the moment. In the future, we should have our own icon font that includes the different chains, so user can pick those if they want to.
• Icons are available in our chaininfo repo: https://github.com/block-core/chaininfo
• This task is to make and add a font based upon the icons, not to link to the binary images that already exists. This will make it work seamless cross the app between existing icons (or new package if we choose to change what we already have).