feat: add test

Author: kykurniawan

.gitignore

@@ -1 +1,2 @@
-/vendor/
+/vendor/
+.phpunit.cache

composer.json

@@ -25,5 +25,12 @@
     "prefer-stable": true,
     "require": {
         "laravel/framework": "^11.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^11.5",
+        "orchestra/testbench": "^9.12"
+    },
+    "scripts": {
+        "test": "phpunit tests"
     }
-}
+}