Use the "Display Entity" for holograms about decentholograms

[Andre601]

Duplicate of #120 assuming you talk about display entities

I'll quote my reply from there:

We're well aware about the Display Entities that will be introduced in the upcoming MC release.

This will bring a lot of cool features, but at the same time a lot of work, especially when d0by wants to keep backwards compatability with the older MC releases, which obviously do not have these features.

As an example, the entities as of right now can...

• ...have their text rotation locked
• ...have the bg disabled
• ...have custom bg color
• ...have custom text size
• ...have text alignment

Those are only a few of the features and they all wouldn't be available in older versions (Or at least not without heavy work), so a separate setup would be needed to be made here to achieve support while keeping compat.

Other, smaller issues and inconveniences are things like how to support existing features of DH. For example, how should per-line permissions to hide/show them be supported with the new entity, if people also want to use text alignment? It would either require splitting up the lines into individual entities (Which is a waste of its line-break support) or add some logic to split the lines that do have special things like line height (Which would also cause issues), permission, etc.

tl;dr: We know about that feature, we want to support it, but it will take a lot of work and time to support it, so patience is apreciated.