Resolve "Add formated report type name to vulnerability scanners"

What does this MR do and why?

Implement the reportTypeHumanized attribute to the VulnerabilityScannerType to make scanner presentation simpler for the frontend.

Screenshots or screen recordings

How to set up and validate locally

1. Configure a project in a group with a variety of executed scanners
2. Execute the following graphql query on the /-/graphql_explorer against your configured testing group's path

query vulnerabilityScanners {
  group(fullPath: "testing-group") {
    vulnerabilityScanners {
      nodes {
        reportTypeHumanized
      }
    }
  }
}

3. Confirm that the returned scanner types are in a humanised format.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #368420 (closed)