--report-gitlab, a new report schema used for CI Component in gitlab

[KunalSin9h]

Documentation: https://docs.gitlab.com/development/integrations/secure/#report
Report Format Fields: https://docs.gitlab.com/development/integrations/secure/#report-fields

since vet is SCA, we only need to see dependency_scanning format.

Json Schema: https://gitlab.com/gitlab-org/security-products/security-report-schemas/-/blob/master/dist/dependency-scanning-report-format.json

Gitlab component implementation approach: #314 (comment)

[abhisek]

@KunalSin9h Does Gitlab use difference JSON for different type of tools like SAST, SCA etc. ? vet has features beyond conventional SCA so want to know how the gitlab specific reporting will evolve

[KunalSin9h]

@abhisek looking at scehma and docs it seems like most of them are similar, see Report Fields

but they do have different types of security scanners, which can be used simultaneously.