Provide .json log format

[shouples]

The VS Code extension is currently tailing the existing .log file, which includes a lot of prefixed information that isn't needed. If we can use a JSON log file, that extra information could be saved as key/value pairs, and when the extension tails the file, it can use a LogOutputChannel (like its own logging) to handle log formatting and log level changes, and select which field(s) should be shown in the Confluent (Sidecar) output channel.

One option is to use https://quarkus.io/extensions/io.quarkus/quarkus-logging-json/

Suggestions for fields (if they aren't already provided):

{
  "timestamp": string, // UTC or user's local timezone (current)?
  "machineName": string, // "qfwqgwmhg1" above
  "path": string, // "/Users/dshoup/.vscode/extensions/confluentinc.vscode-confluent-0.23.0-15+2a4e88/ide-sidecar-0.115.0-runner" above
  "pid": number, // 30945 above
  "level": string,
  "source": string, // "io.con.ide.res.fil.WorkspaceProcessIdFilter" above
  "message": string
}