add tests for Hungary

tests/.pest/snapshots/Countries/HungaryTest/it_can_calculate_hungarian_holidays.snap

@@ -0,0 +1,46 @@
+[
+    {
+        "name": "\u00daj\u00e9v",
+        "date": "01-01-2024"
+    },
+    {
+        "name": "1848-as forradalom \u00e9vfordul\u00f3ja",
+        "date": "15-03-2024"
+    },
+    {
+        "name": "Nagyp\u00e9ntek",
+        "date": "29-03-2024"
+    },
+    {
+        "name": "H\u00fasv\u00e9th\u00e9tf\u0151",
+        "date": "01-04-2024"
+    },
+    {
+        "name": "A munka \u00fcnnepe",
+        "date": "01-05-2024"
+    },
+    {
+        "name": "P\u00fcnk\u00f6sdh\u00e9tf\u0151",
+        "date": "20-05-2024"
+    },
+    {
+        "name": "\u00c1llamalap\u00edt\u00e1s \u00fcnnepe",
+        "date": "20-08-2024"
+    },
+    {
+        "name": "1956-os forradalom \u00e9vfordul\u00f3ja",
+        "date": "23-10-2024"
+    },
+    {
+        "name": "Mindenszentek",
+        "date": "01-11-2024"
+    },
+    {
+        "name": "Kar\u00e1csony",
+        "date": "25-12-2024"
+    },
+    {
+        "name": "Kar\u00e1csony m\u00e1snapja",
+        "date": "26-12-2024"
+    }
+]

tests/Countries/HungaryTest.php

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+<?php
+
+namespace Spatie\Holidays\Tests\Countries;
+
+use Carbon\CarbonImmutable;
+use Spatie\Holidays\Holidays;
+
+it('can calculate hungarian holidays', function () {
+    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+
+    $holidays = Holidays::get(country: 'hu');
+
+    expect($holidays)->toMatchSnapshot();
+});