Add Base for onchain Passports

[Jkd-eth]

User Story:

As a Passport holder,
I want to push my onchain Passport to the Base chain,
So that I can utilize my identity and credentials seamlessly across multiple blockchains and enhance my interoperability within the crypto ecosystem.

Acceptance Criteria

GIVEN I am a user with a Passport,
WHEN I choose to push my Passport to Base via the Passport interface,
THEN my Passport should be successfully pushed to the Base network and verifiable through Base compatible services.

EAS Base details

Product & Design Links:

Tech Details:

• Integration of Base as a supported network in the existing Passport infrastructure.
• Base - 0xc5093228529547272bE5E58db15a5d36fb2C0424 - multisig in SAFE for Passport

Open Questions:

Notes/Assumptions:

[nutrina]

@Jkd-eth we'll need a safe for this

[Jkd-eth]

@nutrina Yep, it's in there under tech details :) Already validated so we're good to go when we're ready