feat: device authorization RFC 8628 (#5646)

* device auth: implement the write events

* add grant type device code

* fix(init): check if default value implements stringer

---------

Co-authored-by: adlerhurst <silvan.reusser@gmail.com>

internal/repository/deviceauth/aggregate.go

@@ -0,0 +1,19 @@
+package deviceauth
+
+import "github.com/zitadel/zitadel/internal/eventstore"
+
+const (
+	AggregateType    = "device_auth"
+	AggregateVersion = "v1"
+)
+
+func NewAggregate(aggrID, instanceID string) *eventstore.Aggregate {
+	return &eventstore.Aggregate{
+		ID:   aggrID,
+		Type: AggregateType,
+		// we use the id because we don't know the resource owner yet
+		ResourceOwner: instanceID,
+		InstanceID:    instanceID,
+		Version:       AggregateVersion,
+	}
+}