feat: Enable contentHash Record

[eduramme]

Add support for managing contentHash records in ENS. Users should be able to retrieve and update the contentHash associated with their ENS domains.

Tasks:

• [x] Implement retrieval of contentHash records.
• [x] Add functionality to update contentHash records.

https://www.figma.com/design/zkL15TsNWgrCVxi30WflqA/Domain-Resolver-(ENS-dapp)?node-id=1726-6740&node-type=canvas&t=loxlkSAXEePLnloZ-0

[pikonha]

in here you can find the setContenthash function signature you need to call in order to set the contenthash of a given domain

[pikonha]

unblocked by #161

[pikonha]

client usage

[pikonha]

it seems to be working fine both the read and write on db and only the write on the arb domains, which is a known problem on our Arbitrum CCIP-Read implementation. but this issue is approved ✅