Add table-based legacy design

app/Helpers/LegacyHelper.php

@@ -0,0 +1,15 @@
+<?php
+
+if (!function_exists('isLegacy')) {
+    /**
+     * Checks if the current hostname should return the legacy site
+     * @return bool
+     */
+    function isLegacy(): bool {
+        return (
+            request()->getHost() === "legacy.wah.moe" ||        // Accessed via legacy.wah.moe domain
+            str_starts_with(request()->getHost(), "192.168") || // Accessed via local IP address
+            !request()->hasHeader("Host")                  // Browser does not send Host header (e.g. NCSA MOSAIC)
+        );
+    }
+}