added ui.faces.scale = # to png faces

[NeonLightning]

Description

i added scaling for png faces

Motivation and Context

got annoyed manually scaling my faces to my display hat mini

How Has This Been Tested?

ran with and without config entries.
decimal numbers work including sub 1. (eg. 0.5)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I've read the CONTRIBUTION guide
• I have signed-off my commits with git commit -s