(feat) Implement Zend RBAC framework for managing role based permissions

In the Permissions Module, create a Roles namespace

Create roles for: Admin Moderator (user community folks with moderation privileges) Owner (can own channels, groups or entities) Subscriber (can subscribe to groups or channels) Blacklisted (cannot see or interact with content) Viewer (default permissions)

Track entity to role relationships Admins are global, they have full permissions Moderators are global, but they have limited permissions Owners are associated to channels, groups or entities and have administrative privileges over things they own Subscribers get permissions controlled by the owner

Permissions that can be assigned by roles (will grow over time) canView canDelete canComment canTag canEdit canBlacklist canBlock

TBD: flesh out individual permissions

Create admin endpoints under /api/v2/permissions/users/{user guid} GET Gets the user's permissions object, all roles, subscriptions,