Resolves #33

@amaid A minor few changes to make here and in ipfs-shipyard/net-ipfs-http-client#41

@amaid I'd like to expand on what you have here to resolve #34. It should end up looking like:

Code pushes to follow!

This is a bit jank, it looks like the API doesn't return a proper JSON array of objects. It streams the objects line-by-line in the response. We'll have to handle this in the implementation, for now I'll just adjust to return IAsyncEnumerable.

We'll get this merged in as part of #41. Thanks again for your contributions here, it helped us get the ball rolling!