Add FilterOptions

Author: chadicus

src/FilterOptions.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace TraderInteractive;
+
+final class FilterOptions
+{
+    /**
+     * @var string
+     */
+    const DEFAULT_VALUE = 'default';
+
+    /**
+     * @var string
+     */
+    const CUSTOM_ERROR = 'error';
+
+    /**
+     * @var string
+     */
+    const IS_REQUIRED = 'required';
+}