This addresses a TODO to validate that the sec-websocket-accept header
in the WebSocket handshake response is valid. To do this we need to
append the WebSocket GUID to the original key sent in sec-websocket-key,
sha1 hash it, and then compare the base64 encoding with the value sent
in the sec-websocket-accept response header.
If they don't match, an error is thrown.
PR-URL: https://github.com/nodejs/node/pull/39357
Refs: https://github.com/nodejs/node-inspect/pull/93
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>