Add slider layout option to the gallery widget

## Prerequisites

- [x] I have searched for similar features requests in both open and closed tickets and cannot find a duplicate.
- [x] The feature is still missing in the latest stable version of Elementor ( Elementor Pro. )

**What problem is your feature request going to solve? Please describe.**
The inability to create an image carousel with the ability to dynamically link from gallery meta fields.

**Describe the solution you'd like**
Add a slider layout option in the gallery widget. This should include alignment, size and aspect ratio styling options for the ability the create uniform and justified thumbnails that line up top and bottom.

**Describe alternatives you've considered**
Download additional third party plugin