* Use standard JSON flags for project command
Deprecates the --format flag and adds the standard JSON flags to properly filter, template, and write JSON.
* Add format flags cmdutil
Resolves PR feedback
* Remove unnecessary fields from JSON format flags
* Add standard format help to remaining commands
* Add JSON format regression tests
Also fixed a number of `project` commands that didn't format the right object as JSON.
* Resolve PR feedback
When connected to a TTY, tell the jq formatter to indent the output, and
enable colorization of the output if the terminal supports it.
Co-authored-by: Mislav Marohnić <mislav@github.com>
The `--json` flag accepts a list of GraphQL fields to query for and
output in JSON format. To get the list of available flags, run the
command with a blank value for `--json`. Additional `--jq` and
`--template` flags are available just like in `gh api`.
