Converts unit test to Pest. Outlines GH Action

tests/Unit/ExampleTest.php

@@ -1,16 +1,5 @@
 <?php
 
-namespace Tests\Unit;
-
-use PHPUnit\Framework\TestCase;
-
-class ExampleTest extends TestCase
-{
-    /**
-     * A basic test example.
-     */
-    public function test_that_true_is_true(): void
-    {
-        $this->assertTrue(true);
-    }
-}
+test('that true is true', function () {
+    expect(true)->toBeTrue();
+});