Add SAST Ruleset Enhancement issue template
What does this MR do and why?
This MR adds an issue template which should help the @gitlab-org/secure/vulnerability-research team and external contributors collaborate more easily on the creation and evaluation of SAST rules as described in #439694 (closed)
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
Edited by Jayson Salazar Rodriguez