feat: new ErpEntityData trait

This trait class is temporary, we may switch to interfaces later.
this trait class extends erp entities with getReferenceData().
this must be used wherever an erp is to be stored in extra data.

src/QUI/ERP/ErpEntityData.php

+<?php
+
+namespace QUI\ERP;
+
+trait ErpEntityData
+{
+    public function getReferenceData(): array
+    {
+        return [
+            'id' => $this->getUUID(),
+            'id_str' => $this->getPrefixedNumber(), // old
+            'prefixedNumber' => $this->getPrefixedNumber(),
+            'uuid' => $this->getUUID(),
+            'globalProcessId' => $this->getGlobalProcessId(),
+            'currentStatusId' => $this->getCurrentStatusId(),
+        ];
+    }
+}