This commit converts all of the places using ColorScheme.Gray and ColorScheme.Grayf to Muted and Mutedf.
There is a little extra tidying up with local variable names or converting code to use Mutedf format.
The API field `WorkflowRun.name` is not guaranteed to correspond to the workflow name anymore. This introduces additional API lookups that resolve Workflows by their ID and look up their name in a future-proof fashion.
It also adds two new JSON fields for export: `displayTitle` and `workflowName`.
Co-authored-by: Christina Guo <61271066+guo-chris@users.noreply.github.com>
Co-authored-by: Mislav Marohnić <mislav@github.com>
