Add CESS network ss58 address prefix (#22)
* Add CESS network ss58 address prefix * Move CESS prefix to have correct order and formatting * Change CESS testnet network and displayname and add CESS mainnet prefix
* Add CESS network ss58 address prefix * Move CESS prefix to have correct order and formatting * Change CESS testnet network and displayname and add CESS mainnet prefix