Created a membership approval token repository and required token table & model

src/Repository/OrganisationMembershipApprovalRepository.php

@@ -0,0 +1,53 @@
+<?php
+
+/*
+ * AVSDev UF Organisations (https://avsdev.uk)
+ *
+ * @link      https://git.avsdev.uk/avsdev/sprinkle-organisations
+ * @license   https://git.avsdev.uk/avsdev/sprinkle-organisations/blob/master/LICENSE.md (LGPL-3.0 License)
+ */
+
+namespace UserFrosting\Sprinkle\Organisations\Repository;
+
+use UserFrosting\Sprinkle\Core\Util\ClassMapper;
+
+/**
+ * Token repository organisation membership join requests.
+ *
+ * @author Craig Williams (https://avsdev.uk)
+ */
+class OrganisationMembershipApprovalRepository extends BasicTokenRepository
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected $modelIdentifier = 'organisation_membership_approval';
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function updateTokenOwner($owner_id, $model, $args)
+    {
+        $memberMap = $this->classMapper->getClassMapping('organisation_member')::findUnique($owner_id, 'map_id', false);
+
+        if (!$memberMap) {
+            return false;
+        }
+
+        // If specified, recored the approver. This assumes the model has an approver_id field which it may not...
+        if ($args['approver_id']) {
+            $model->approver_id = $args['approver_id'];
+        }
+
+        if ($args['approved']) {
+            // Mark the request as approved
+            $memberMap->flag_approved = true;
+            $memberMap->save();
+        } else {
+            // Delete the request
+            $memberMap->delete();
+        }
+
+        return true;
+    }
+}