User can choose a ready-made structure builder template [SIW]

Before change:

If the user wants to change structure builders, he/she has to manually rearrange the sliders.

After change:

1. It is still possible to manually edit the sliders (no change here).
2. Several ready-made templates are prepared (on the right side of the panel with sliders)
   1. The user can choose one of them, which will set the sliders accordingly
   2. The user can select the "current" option again, which will return the sliders to the state before the template selection.
      The "current" option is the state last approved by the Save button (or default setting for the selected Box Type - in case the Save button has not been used yet).
3. Next to the templates there is a place for a description (with picture), to explain to the user what a given template changes.
4. In the first version, the user cannot prepare his/her own template (maybe in the future).

Additionally - it is possible to choose a template in the form for creating a Box (as a selector, by default set to "default", where "default" means Structure Builders defined for a selected Box Type).

Proposed templates:

JIRA:

I. Epic / sub-task
(Agile approach)

II. Project / Epic / sub-task
(Agile approach - multiple projects)

III. Project / Version / sub-task
(Release approach)

Trello:

I. Boards / Lists / Checklists / Checklist Items
(Detailed view)

II. Boards / Lists
(Group by lists)

III.  Boards
(Flat list)