fix: User checks (#139)

* check uniqueness on create and register user

* change user email, reserve release unique email

* usergrant unique aggregate

* usergrant uniqueness

* validate UserGrant

* fix tests

internal/org/model/types.go

@@ -11,6 +11,7 @@ const (
 	OrgChanged     models.EventType = "org.changed"
 	OrgDeactivated models.EventType = "org.deactivated"
 	OrgReactivated models.EventType = "org.reactivated"
+	OrgRemoved     models.EventType = "org.removed"
 
 	OrgNameReserved models.EventType = "org.name.reserved"
 	OrgNameReleased models.EventType = "org.name.released"

internal/org/repository/eventsourcing/org_member.go

@@ -20,7 +20,7 @@ func orgMemberAddedAggregate(ctx context.Context, aggCreator *es_models.Aggregat
 	}
 
 	validationQuery := es_models.NewSearchQuery().
-		AggregateTypeFilter("org", "user").
+		AggregateTypeFilter(org_model.OrgAggregate, usr_model.UserAggregate).
 		AggregateIDsFilter(member.AggregateID, member.UserID)
 
 	validation := addMemberValidation(aggregate, member)