Feature: Double-sided rendering for Text Displays

[Cyrzuu]

For which plugin is the feature?

FancyHolograms

Describe your idea

Please add an option to make Text Displays visible from both sides. Currently, when the display is set to "billboard FIXED", the text disappears when you look at it from behind.
It would be great to have a "double-sided" toggle so the text is rendered on both the front and back of the entity. This would make it readable from any angle without needing to spawn two separate displays back-to-back.