refactor: replace custom CRM with Monica fork

app/Traits/DAVFormat.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Traits;
+
+trait DAVFormat
+{
+    /**
+     * Formats and returns a string for DAV Card/Cal.
+     *
+     * @param  null|string  $value
+     * @return null|string
+     */
+    private function formatValue(?string $value): ?string
+    {
+        return ! empty($value) ? str_replace('\;', ';', trim($value)) : null;
+    }
+}