Support for PicoCMS plugin

[arthurzenika]

On a nextcloud deployed using yunohost, one can install the PicoCMS https://github.com/nextcloud/cms_pico application and create a static site using nextcloud, the markdown editor etc. It used http://picocms.org/

But exposing the site is not very easy.

It would be nice to have a easy way in yunohost to expose such sites enabling static site generation on yunohost.

Apache configuration is described on the plugin project https://github.com/nextcloud/cms_pico/wiki/Admin-Settings#apache-configuration

[arthurzenika]

Talk about nginx configuration : https://github.com/nextcloud/cms_pico/issues/24