MessageChannelAdapter is a small utility function that turns string-based
communication channels – like a WebSocket, RTCDataChannel or
PresentationConnection – into a Comlink-compatible postMessage-based API
that can transfer MessagePorts.
See the examples, specifically WebRTC and Presentation API.
wrap returns a MessagePort that serializes messages using JSON.stringify
and handles transferred MessagePorts automatically. endpoint is expected to
have send and addEventListener.