@spec receive(term()) :: struct() | {:error, :unknown_server_message}

Decodes received webhook to notification structs.

iex>  <<18, 76, 10, 36, 102, 98, 102, 52, 49, 57, 48, 99, 45, 53, 99, 55, 54, 45, 52,
...>  49, 53, 99, 45, 56, 57, 51, 57, 45, 53, 50, 99, 54, 101, 100, 50, 48, 56, 54,
...>  56, 98, 18, 36, 99, 55, 50, 51, 54, 53, 56, 55, 45, 53, 100, 102, 56, 45, 52,
...>  98, 52, 49, 45, 98, 54, 101, 52, 45, 50, 54, 56, 101, 55, 49, 49, 51, 51, 101,
...>  101, 50>>
...> |> Jellyfish.WebhookNotifier.receive()
%Jellyfish.Notification.PeerConnected{
room_id: "fbf4190c-5c76-415c-8939-52c6ed20868b",
peer_id: "c7236587-5df8-4b41-b6e4-268e71133ee2"
}
iex>  Jellyfish.WebhookNotifier.receive(<<>>)
{:error, :unknown_server_message}