ENS endpoint

[nerfZael]

Add new endpoint /ens/{network}/{ensDomain}
It should work the same as the /ipfs/{ipfsHash} except it should of course first resolve the ensDomain to an ipfsHash
Use the ens resolver like here: https://github.com/nerfZael/wrappers/blob/main/src/services/WrapperService.ts to not rely on a predefined public ens resolver address.

[nerfZael]

Blocks #24

[nerfZael]

Re opening this as it needs to be revisited now that the ens-indexer and persistence nodes have been separated
Also, I don't think this is really alpha priority, so I'm moving it out