Add craigmsmith as maintainer

What does this MR do?

Add @craigmsmith as maintainer

Contributions:

• !295 (merged)
• !272 (merged)
• !285 (merged)
• !274 (merged)
• !246 (merged)
• !241 (merged)
• !240 (merged)
• !233 (merged)
• !223 (merged)
• !213 (merged)

/cc @amarpatel

What are the relevant issue numbers?

NA

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 updated/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