Jainammm as primary maintainer of k6 artifacthub integration listing

[agardnerIT]

I have already listed you as a CODEOWNER for the k6 integration on artifacthub. When keptn-contrib/artifacthub#183 is complete, please start migrating documentation across to artifacthub or at least modify the content to point to this repository.

At this point you will "own" the k6 integration for Keptn as you are now the most knowledgeable on this area, it makes sense for you to be the primary maintainer.

This issue can be closed when:

• Add Jainamm to this repo keptn-contrib/artifacthub#183 is done
• The artifacthub listing points to (or removes the need for) this repo

This issue is outside the GSoC scope and is a separate, follow-on activity.

[jainammm]

thanks @agardnerIT