Add GLSL shader node using PyOpenGL (#12148)

* adds support for executing simple glsl shaders
using moderngl package

* tidy

* Support multiple outputs

* Try fix build

* fix casing

* fix line endings

* convert to using PyOpenGL and glfw

* remove cpu support

* tidy

* add additional support for egl & osmesa backends

* fix ci
perf: only read required outputs

* add diagnostics, update mac initialization

* GLSL glueprints + node fixes (#12492)

* Add image operation blueprints

* Add channels

* Add glow

* brightness/contrast

* hsb

* add glsl shader update system

* shader nit iteration

* add multipass for faster blur

* more fixes

* rebuild blueprints

* print -> logger

* Add edge preserving blur

* fix: move _initialized flag to end of GLContext.__init__

Prevents '_vao' attribute error when init fails partway through
and subsequent calls skip initialization due to early _initialized flag.

* update valid ranges
- threshold 0-100
- step 0+

* fix value ranges

* rebuild node to remove extra inputs

* Fix gamma step

* clamp saturation in colorize instead of wrapping

* Fix crash on 1x1 px images

* rework description

* remove unnecessary f


Co-authored-by: Jedrzej Kosinski <kosinkadink1@gmail.com>
Co-authored-by: Hunter Senft-Grupp <hunter@comfy.org>

requirements.txt

@@ -30,3 +30,6 @@ kornia>=0.7.1
 spandrel
 pydantic~=2.0
 pydantic-settings~=2.0
+PyOpenGL
+PyOpenGL-accelerate
+glfw