feat: ✨ add reversed layout variant to `sd-teaser`

[karlbaumhauer]

User Story

As a user of the Solid Design System, I would like to utilize a reversed layout variant in the sd-teaser component, so that the CMS teaser can be migrated with default variants of the sd-teaser.

Suggested Solution

Add new layout (tba) proberty to reverse the layout ONLY in the horizontal variant.

Subtasks

• [ ] #1403
• [ ] #1404
• [ ] #1405

DoR

• [ ] Item has business value
• [ ] Item all subtasks have been estimated by the team
• [ ] Item is clear and well-defined
• [ ] Item dependencies have been identified

DoD

• [ ] All subtasks have been closed