efactor(shader): migrate GLSL shaders to ShaderLab and clean up shader infrastructure #2961

Draft

zhuxudong wants to merge 11 commits intogalacean:dev/2.0from

zhuxudong:refactor/glsl-to-shaderlab

Commits on Apr 8, 2026

refactor(core): migrate shaders from core/shaderlib to shader package and clean up old files
zhuxudong
committed

Commits on Apr 9, 2026

fix(shader): move camera_ProjectionParams to Common.glsl and fix test assertions
zhuxudong
committed

Commits on Apr 10, 2026

refactor(shader): reorganize into Shaders/ + ShaderLibrary/ and migrate PostProcess/AO
zhuxudong
committed

Commits on Apr 13, 2026