ci: Added SoarTest.php to test LaravelSoar facade

tests/SoarTest.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of the guanguans/laravel-soar.
+ *
+ * (c) guanguans <[email protected]>
+ *
+ * This source file is subject to the MIT license that is bundled.
+ */
+
+namespace Tests;
+
+use Guanguans\LaravelSoar\Facades\Soar;
+
+it('can add macro method', function (): void {
+    Soar::macro('foo', function (): void {});
+
+    /** @noinspection PhpUndefinedMethodInspection */
+    expect(Soar::foo())->toBeNull();
+})->group(__DIR__, __FILE__);