Add sbom command

What does this MR do?

• adds a new sbom command to all the gemnasium* analyzers.
• extracts the build stage of gemnasium-maven and gemnasium-python into a buildProjects function, which is used in both the run and sbom commands
• adds integration tests for the new sbom command

What are the relevant issue numbers?

1 - Add sbom command to gemnasium analyzers (gitlab-org/gitlab#364622 - closed)

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated for GitLab EE, if necessary
• Documentation created/updated for this project, if necessary
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Job definition updated, if necessary
  • Auto-DevOps template
  • Job definition example
  • CI Templates
• Conforms to the code review guidelines
• Conforms to the Go guidelines
• Security reports checked/validated by reviewer

Closes #364622