Fixes openemr#7570 list service search by codes (openemr#7572)

Fixes openemr#7570 search for an option by the codes column

src/Services/ListService.php

@@ -114,6 +114,21 @@ public function getListOption($list_id, $option_id)
         return null;
     }
 
+    /**
+     * Retrieves a list option for a given list by the code value
+     * @param string $list_id
+     * @param string $code The exact code(s) to match.  This must match the string precisely and fuzzy matching is not currently supported.
+     * @return array|null
+     */
+    public function getListOptionByCode(string $list_id, string $code)
+    {
+        $records = $this->getOptionsByListName($list_id, ['codes' => $code]);
+        if (!empty($records)) { // should only be one record
+            return $records[0];
+        }
+        return null;
+    }
+
     public function getOne($pid, $list_type, $list_id)
     {
         $sql = "SELECT * FROM lists WHERE pid=? AND type=? AND id=? ORDER BY date DESC";