feat: allow changing target port

pkg/zitadel/zitadel.go

@@ -1,6 +1,9 @@
 package zitadel
 
-import "fmt"
+import (
+	"fmt"
+	"strconv"
+)
 
 // Zitadel provides the ability to interact with your ZITADEL instance.
 // This includes authentication, authorization as well as explicit API interaction
@@ -34,6 +37,13 @@ func WithInsecure(port string) Option {
 	}
 }
 
+// WithPort allows to connect to a ZITADEL instance running on a different port
+func WithPort(port uint16) Option {
+	return func(z *Zitadel) {
+		z.port = strconv.Itoa(int(port))
+	}
+}
+
 // Origin returns the HTTP Origin (schema://hostname[:port]), e.g.
 // https://your-instance.zitadel.cloud
 // https://your-domain.com