Reserve space for previous and next buttons

Description

Add extra boolean parameters to reserve previous and next spaces

Motivation and Context

Buttons should not move around on UI when advancing through the playlist

Screenshots / GIFs (if appropriate):

See issue ticket for screenshots

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have read the CONTRIBUTING section of the README document.

Resolves

Fixes: #1509 (closed)