[FEATURE] Display active vs. inactive maintainers

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Is your feature request related to a problem?

Coming from opensearch-project/OpenSearch#12970, inactive maintainers should be moved to emeritus. A tool could help identify which ones. hat the problem is, e.g. I'm always frustrated when [...]._

What solution would you like?

Something inspired by https://gist.github.com/peternied/c8ac7fb4552cc36890969ca4b33e2cb0.

What alternatives have you considered?

A bot that extracts maintainers and opens PRs in repos.