[epic] investigate and socialize contribution ladder automation options

[grokspawn]

The o-f repos currently are a mix of approaches of code ownership. The contributor-ladder document describes an approach which would most likely require prow/tide to define/enforce group policies.
These approaches do not appear to be trivially reproducible without a prow/tide instance (which CNCF projects do not have), so alternatives need to be researched, gaps identified, and a proposal constructed to the steering committee about how we can implement and/or update contributor ladder to reach an amenable solution.