Add support for binary frames to websocket service

websocketservice.js originally only supported text frames, which requires utf-8 encoding/decoding. This adds support for binary frames, which don't need encoding/decoding, so are simpler to work with and slightly faster.

Also change how some error conditions are handled -- shouldn't just log a debug message, they are unrecoverable errors and should be treated as such.

assigned to @rswindell

enabled an automatic merge when the pipeline for 987f7dba succeeds

merged

mentioned in commit c9e64372

mentioned in commit 9337a099