[Meta] Feature collection

Problem/Motivation

Let's collect what features should be implemented to integrate ECA with Group. We may want to declare the group_actions module as a dependency so that we already get the actions implemented there. This feature collection should therefore focus on things that make ECA life easer without building redundant solutions.

Proposed resolution

• Event
  • Implement hook_group_operations_alter
• Conditions
  • Is user X member of group Y
  • Has user X role Z in group Y
  • Is entity X associated with group Y