Add actual badge classes to bundle

src/Model/BadgePalette.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pcm\BadgeBundle\Model;
+
+/**
+ * Contains the main colour classes for a badge.
+ */
+final readonly class BadgePalette
+{
+    /**
+     * @param string $textColourClass       Text colour Tailwind class
+     * @param string $borderColourClass     Border colour Tailwind class
+     * @param string $backgroundColourClass Background colour Tailwind class
+     */
+    public function __construct(public string $textColourClass, public string $borderColourClass, public string $backgroundColourClass)
+    {}
+}