Add supports flags to chains

[bbenligiray]

Currently, the common property of all chains in @api3/chains is that Api3ServerV1 is deployed on them. However, we now need to add chains that Api3ServerV1 is not necessarily deployed on, which will create confusion about which chains are supported for what. On top of that, ChainAPI supports an entirely independent subset of all these chains.

I propose that we add a supports field to the chain object as in

{
  "supports": [ "AirnodeRrpV0", "Api3ServerV1", "ChainAPI" ],
  ...
}

@andreogle wdyt?

[andreogle]

Yeah sounds good to me. I can't think of a better structure for this at the moment.

I'm hoping to get the TypeScript PR merged either today or tomorrow, but feel free to add this to current main if it's urgent and I'll merge those changes into that PR

[bbenligiray]

Okay, I'm planning to review the PR tomorrow and we can do this after that is merged

[bbenligiray]

As a note, I'm currently doing this partially here https://github.com/api3dao/airnode-protocol-v1/blob/main/src/supported-chains.js

[andreogle]

Nice, thanks. I can work on adding this later using that list as the reference

[andreogle]

Closing this issue. See related (closed) PR for more info: #86