{namespace cam=Quizpalme\Camaliga\ViewHelpers}
Note: if you want to copy this HTML-file to your fileadmin-folder, you can specifty the folder like this:
plugin.tx_camaliga.view.templateRootPaths.1 = fileadmin/template/files/
Copy this file in a subfolder named "Content" of this folder.
If you want to use the clustering, download the plugin from here and customise the path below:
https://github.com/googlemaps/js-marker-clusterer
Infos: https://developers.google.com/maps/documentation/javascript/marker-clustering?hl=de