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`.
This is the default sort mode for issues, so it's not needed to
explicitly set it. Furthermore, the user can specify their own sort mode
through the `--search` option.
This switches to the Search API whenever labels are specified in `issue
list` or `pr list`. This ensures that the results match those that would
be returned in the web UI.
