chore: add usage tracking package (#19095)

Not used in coderd yet, see stack.

Adds two new packages:
- `coderd/usage`: provides an interface for the "Collector" as well as a stub implementation for AGPL
- `enterprise/coderd/usage`: provides an interface for the "Publisher" as well as a Tallyman implementation

Relates to https://github.com/coder/internal/issues/814

codersdk/rbacresources_gen.go

@@ -35,6 +35,7 @@ const (
 	ResourceSystem                        RBACResource = "system"
 	ResourceTailnetCoordinator            RBACResource = "tailnet_coordinator"
 	ResourceTemplate                      RBACResource = "template"
+	ResourceUsageEvent                    RBACResource = "usage_event"
 	ResourceUser                          RBACResource = "user"
 	ResourceUserSecret                    RBACResource = "user_secret"
 	ResourceWebpushSubscription           RBACResource = "webpush_subscription"
@@ -100,6 +101,7 @@ var RBACResourceActions = map[RBACResource][]RBACAction{
 	ResourceSystem:                        {ActionCreate, ActionDelete, ActionRead, ActionUpdate},
 	ResourceTailnetCoordinator:            {ActionCreate, ActionDelete, ActionRead, ActionUpdate},
 	ResourceTemplate:                      {ActionCreate, ActionDelete, ActionRead, ActionUpdate, ActionUse, ActionViewInsights},
+	ResourceUsageEvent:                    {ActionCreate, ActionRead, ActionUpdate},
 	ResourceUser:                          {ActionCreate, ActionDelete, ActionRead, ActionReadPersonal, ActionUpdate, ActionUpdatePersonal},
 	ResourceUserSecret:                    {ActionCreate, ActionDelete, ActionRead, ActionUpdate},
 	ResourceWebpushSubscription:           {ActionCreate, ActionDelete, ActionRead},