test: add button for preview collage layouts with text zones

Change-Id: I209d6afe3c1a5438d125968c9e47db3ba8f1cacb

Author: andi34

resources/lang/en.json

@@ -930,6 +930,7 @@
   "takeVideo": "Video",
   "telegram": "Community @ Telegram",
   "testMenu": "Available tests",
+  "testTextPositions": "Preview collage layouts with text zones",
   "test_connection": "Test Connection",
   "test_update_available": "There is a test update available.",
   "theme_title": "Themes",

test/index.php

@@ -39,6 +39,7 @@
 echo getMenuBtn(PathUtility::getPublicPath('test/phpinfo.php'), 'phpinfo', '');
 echo getMenuBtn(PathUtility::getPublicPath('test/photo.php'), 'pictureTest', '');
 echo getMenuBtn(PathUtility::getPublicPath('test/collage.php'), 'collageTest', '');
+echo getMenuBtn(PathUtility::getPublicPath('test/text-positions.php'), 'testTextPositions', '');
 echo getMenuBtn(PathUtility::getPublicPath('test/preview.php'), 'previewTest', '');
 echo getMenuBtn(PathUtility::getPublicPath('test/chroma.php'), 'chromaPreviewTest', '');
 echo getMenuBtn(PathUtility::getPublicPath('test/trigger.php'), 'remotebuzzerGetTrigger', '');