[Proposal] Transform script into a container (#2708) (#2712)

* transform script union to a container variant

* Remove unused imports

* refresh outputs

* remove wrongly added empty files

* merge script into a standard class

* add output

* remove duplicated fields

* add newly generated output

* simplify RoleTemplateScript to reflect Script changes

* add newly generated output

* make source option in RoleTemplateScript

(cherry picked from commit 90fe7e2)

Author: Anaethelion