Cava GLSL

[LukashonakV]

Dear @Alexays , I'm happy to introduce one more cava frontend module which implements OpenGL frontend logic and provides new type of user experience of the waybar usage.
If this PR is confirmed and taken, then PR #4587 could be skipped.
man for the new module will be provided further(wiki as well)

2025-12-06.18-18-27.mp4

[LukashonakV]

Looks like epox needs to be reordered. Will fix today

[LukashonakV]

Looks like epox needs to be reordered. Will fix today

Fixed now

[LukashonakV]

Hi @Alexays , there are some improvements.

1. It's cava frontend which now manages which frontend should be using is based on the cava configuration
2. Fixed some technical issues
3. Fully covers PR cava nonsafe threads #4587

---

Next set of waybar configurations can be used to have the same result
waybar_configs.tgz

Now result is:

2025-12-09.17-49-41.mp4

[LukashonakV]

One more example where the style looks quite good

2025-12-09.22-51-00.mp4

Using this waybar config:
Uploading waybar_config#3.tgz…