Allow team leads to manage workspace releases

Engineering managers & team leads sit "in between" Aha! Roadmaps and Aha! Develop. They more than just team owner permissions, but not full workspace contributor permissions.

Key use cases

• Team leads can provide initial estimates on features before they're ready to be assigned over to the team for delivery.

• Team leads can manage existing releases to set capacity for their teams and keep release plans up-to-date.

• Team leads can create new releases to reflect work the team is doing.