feat: create new subdomain flow (DB resolver)

[eduramme]

Feature Request

Describe the Feature Request

Create the modal user-flow for registering a subdomain (with records).

Figma designs and prototype is available here.

Must:

This modal user-flow should only be reachable when a domain uses our new ENSIP for Off-Chain resolvers, meaning that subdomains should not be created through SubGraph.

Definition of Done:

This issue will be considered as done when:

• [x] All the subdomain registration steps inside the modal, are accessible and have clear rules for accessing (e.g. we cannot let a user access the blockchain call step if the user has put an invalid Ethereum Address)
• [x] Records data are being validated before subdomain registration (please reuse the validations we do in Edit Records Modal, here)

Other info

• 2 transactions will be made. One for registry and another one for text records

[pikonha]

a single transaction has been used to register a subdomain thanks to the EIP-5559 v2