Added optional string role IDs for the API.

database/2024_09_16_205613_add_role_id_string.php

@@ -0,0 +1,13 @@
+<?php
+use Index\Data\IDbConnection;
+use Index\Data\Migration\IDbMigration;
+
+final class AddRoleIdString_20240916_205613 implements IDbMigration {
+    public function migrate(IDbConnection $conn): void {
+        $conn->execute(<<<SQL
+            ALTER TABLE msz_roles
+                ADD COLUMN role_string VARCHAR(20) NULL DEFAULT NULL COLLATE 'ascii_general_ci' AFTER role_id,
+                ADD UNIQUE INDEX roles_string_unique (role_string);
+        SQL);
+    }
+}