Add Fortify on Demand (FoD) SAST template

What does this MR do and why?

This MR has been opened to finish the Community contribution work started in !89444 (closed)

Screenshots or screen recordings

Please see original MR for full context, including screenshots.

How to set up and validate locally

This template can only be used by existing Fortify on Demand customers. Mike LeBeau and Matt Wilson from GitLab have seen this template in action during a Teams meeting on April 27th.

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.