Shaderlab support #include macro and optimize glsl related syntax

[Sway007]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

• Support include macro

...
VertexShader = vert;
FragmentShader = frag;

#include <test_common>

BlendState = blendState;
...

• Add a custom shader segment registration interface for use by include macros

shaderLab.registerShaderFragment("test_common", commonSource);

#include <test_common>

• Improved support for the glsl syntax standard

What is the current behavior? (You can also link to an open issue here)

What is the new behavior (if this is a feature change)?

Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

Other information:

[codecov]

Codecov Report

Patch coverage: 86.69% and project coverage change: -2.75% ⚠️

Comparison is base (40f6ab4) 62.17% compared to head (bf5b027) 59.42%.
Report is 9 commits behind head on dev/1.1.

❗ Current head bf5b027 differs from pull request most recent head b7362be. Consider uploading reports for the commit b7362be to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           dev/1.1    #1727      +/-   ##
===========================================
- Coverage    62.17%   59.42%   -2.75%     
===========================================
  Files          430      424       -6     
  Lines        22542    20248    -2294     
  Branches      3202     3274      +72     
===========================================
- Hits         14015    12032    -1983     
+ Misses        7300     7009     -291     
+ Partials      1227     1207      -20     

Files Changed	Coverage Δ
packages/loader/src/SceneLoader.ts	6.00% <0.00%> (-1.15%)	⬇️
packages/shader-lab/src/parser/tokens/index.ts	100.00% <ø> (ø)
packages/core/src/shaderlib/ShaderFactory.ts	44.44% <50.00%> (-2.78%)	⬇️
packages/core/src/mesh/SkinnedMeshRenderer.ts	59.73% <71.42%> (+4.73%)	⬆️
packages/shader-lab/src/Ast2GLSLUtils.ts	58.33% <75.00%> (+0.75%)	⬆️
packages/shader-lab/src/ShaderVisitor.ts	76.61% <80.51%> (-3.03%)	⬇️
packages/shader-lab/src/RuntimeContext.ts	82.11% <86.36%> (+2.78%)	⬆️
packages/shader-lab/src/ast-node/AstNode.ts	75.57% <88.33%> (-1.14%)	⬇️
packages/shader-lab/src/AstNodeUtils.ts	77.27% <100.00%> (-0.28%)	⬇️
packages/shader-lab/src/parser/ShaderParser.ts	98.57% <100.00%> (-0.08%)	⬇️
... and 3 more

... and 304 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[GuoLei1990]

shaderInfo.diagnostics = context.diagnostics and shaderInfo.ast = ast; will delete later?

[Sway007]

shaderInfo.diagnostics = context.diagnostics and shaderInfo.ast = ast; will delete later?

done