This is the first step on moving the existing bt5(s) to only use paths to install objects.

For, we base this on tiwariayush/erp5_catalog branch, reason being we start with moving all CatalogMethodTemplateItem to use only PathTempalteItem. This is possible when we have catalog as erp5 objects.

The idea is to remove the usage of multiple items to install a bt5 and rather use a single identity (for now path) to install the objects.

Steps that goes to make this working:

1. Move CatalogMethodTemplateItem for erp5_mysql_innodb and erp5_base bt5 to use.