update kirby to v5 and add refresh cache panel view button

public/kirby/config/api/routes/changes.php

@@ -0,0 +1,37 @@
+<?php
+
+use Kirby\Api\Controller\Changes;
+use Kirby\Cms\App;
+use Kirby\Cms\Find;
+
+return [
+	[
+		'pattern' => '(:all)/changes/discard',
+		'method'  => 'POST',
+		'action'  => function (string $path) {
+			return Changes::discard(
+				model: Find::parent($path),
+			);
+		}
+	],
+	[
+		'pattern' => '(:all)/changes/publish',
+		'method'  => 'POST',
+		'action'  => function (string $path) {
+			return Changes::publish(
+				model: Find::parent($path),
+				input: App::instance()->request()->get()
+			);
+		}
+	],
+	[
+		'pattern' => '(:all)/changes/save',
+		'method'  => 'POST',
+		'action'  => function (string $path) {
+			return Changes::save(
+				model: Find::parent($path),
+				input: App::instance()->request()->get()
+			);
+		}
+	],
+];