Maintainers list cleanup process

[getsaurabh02]

Today all the packages in opensearch-project such as common-utils have the list of maintainers which is controlled by the MAINTAINERS.md file. We do have process defined by how we add people to the maintainers list depending upon their contributions and engagement in reviewing PRs, triaging issues etc.

However, this doesn’t necessarily imply that MAINTAINERS.md becomes the ever growing list of maintainers. We should come up with some unified process around cleaning up the list, based on the recency of the activities of the maintainers. Such as inactivity for 60 days.

Opening up this issue to collect more feedback/thoughts. Also to know, if we have already given some thought to it previously.

[lezzago]

Is 60 days sufficient or should we possibly consider 90 days for repos like this as typically there are not many changes going in. Also I think inactivity should mean they do not push commits, review PRs, add github issues, or coment on github issues.

[getsaurabh02]

This has been later discussed broadly as part of opensearch-project/.github#59.
The new proposal should apply to all the OpenSearch Repositories.