Spryzeen's Bushy warts

Shader update

- Update pack.mcmeta to 1.19.4

- Now the pack uses shaders to make some parts emissive without optifine (no optifine required)
- Much more compressed model with the help of transparency support provided by Ewan Howell (better perfomance in warped and crimson forest)

- Added texture variants for bottom and the main block

- Update pack icon

This pack uses shaders so if you are using others shaders it probably won't work