Iss #77 - Add EF look and feel template into auto-loaded tags template

A new eclipse_base template has been added that makes use of the eclipse
header and footer files that already existed, and adds a few basic
overridable sections for flexibility. As part of Quarkus configs, the
templates/tags folder for Qute templates is auto registered as a source,
meaning that this will be available to consumers of the core package.