Feature: Allow to use DFINITY Internet Computer addresses

[vporton]

Please add to your features the ability to use a DFINITY Internet Computer address to identify a user instead (or in addition to) of an Ethereum address.

This is important for two my projects:

• a social network
• a future Gitcoin replacement

because both run on DFINITY Internet Computer rather than on Ethereum.

Please note that DFINITY Internet Computer identity is not about a new stamp. It is a user address, not a proof of personhood.