Consider signposting anchorectl for enterprise customers

[popey]

We had some feedback from Anchore Enterprise customer support that customers are discovering scan-action and sbom-action, and expecting them to solve their Anchore Enterprise sbom/scan requirements.

The Anchore Enterprise supported tool is anchorectl.

We should consider a short, informational banner at the top of the marketplace entry, so enterprise users don't waste their time, and the CS team's time.

[lwade]

Other providers will advertise their plugin as so: "company_name OSS" and "company_name Enterprise". This makes it clear which to choose. Alternatively, we add Anchore Enterprise support to these actions.

[nwl]

+1 on labeling these as Anchore OSS to distinguish them.

[lwade]

In discussion with @nwl, we'd suggest renaming to just "Syft" and "Grype" with respective logos, without Anchore or Anchore branding. Then mention Anchore in the readme as well.