feat: add support for memory report

[guipublic]

Description

Problem*

Related to Noir issue #6604

Summary*

Generates a markdwon memory report from json report

Additional Context

PR Checklist*

• I have tested the changes locally.
• I have formatted the changes with Prettier and/or cargo fmt on default settings.

[TomAFrench]

I'd like to keep the scope of this action focused more on reporting on Noir metrics rather than it being a generic reporting action. Could you fork this if we want to add tracking of memory?

[TomAFrench]

I'd like to keep this action targetted at Noir developers while memory reports are only useful for the Noir compiler developer team. We should create a separate action for this.

[TomAFrench]

Closing as we have the noir-bench-diffs repo now.