init

+{
+  "name": "pvduc/daito-utils",
+  "description": "A description of your package",
+  "type": "library",
+  "autoload": {
+    "psr-4": {
+      "Pvduc\\DaitoUtils\\": "src/"
+    }
+  },
+  "require": {
+    "php": ">=7.3"
+  }
+}

+<?php
+namespace Pvduc\DaitoUtils;
+
+class StringUtils {
+    public static function toUpper($text){
+        return strtoupper($text);
+    }
+}
\ No newline at end of file