Implement handler for outputting JSON from commands

[sanfrancrisko]

Currently, console output is handled by zerolog using the zerolog.ConsoleWriter formatter.

The pct new --list command supports the --format json flag, to output the templates in JSON format.

Across both PCT and PRM, each command should support --format json. We should have a handler that can be called to output in JSON format. Implementation will need to be determined after some analysis of zerolog's capabilities.

The preliminary ideas are to have a schema of:

{"error": "", "data": {}, "logs": []}

Error: The error message being logged from the call to log.Error()
Data: JSON from the command output to return (e.g. pct new --list --format json)
Logs: If possible, the logs that were being sent to zerolog

Considerations for logging:

• If it not possible to output the JSON formatted logs to within the log parameter, then we should determine whether we write the logs to disk, instead
• At INFO level, there should be no logs output
• Zerolog should not output anything to console when --format json is specified

Acceptance Criteria

TBD when some more investigation is done