ShaderData add get shader properties ability

[GuoLei1990]

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)

1. ShaderData add getProperties(out: ShaderProperty[]): void and getProperties(): ShaderProperty[] method, developer can get all shaderProperties that have been set on this shaderData.

example:

  const properties = new Array<ShaderProperty>();
  shaderData.getProperties(properties);
  for (let i = 0, n = properties.length; i < n; i++) {
    const property = properties[i];
    switch (property.type) {
      case ShaderPropertyType.Float:
        const floatValue= shaderData.getFloat(property);
        or
        const floatValue= <number>shaderData.getPropertyValue(property);
        console.log(floatValue);
        break;
      case ShaderPropertyType.Texture:
        .......
        break;
     ........
    }
  }

2. Add Material.test.ts

[codecov-commenter]

Codecov Report

Merging #1030 (0e3fb28) into dev/0.9 (269ab02) will increase coverage by 3.85%.
The diff coverage is 66.66%.

@@             Coverage Diff             @@
##           dev/0.9    #1030      +/-   ##
===========================================
+ Coverage    29.52%   33.38%   +3.85%     
===========================================
  Files          331      332       +1     
  Lines        14704    14730      +26     
  Branches      2251     2261      +10     
===========================================
+ Hits          4341     4917     +576     
+ Misses        9849     9268     -581     
- Partials       514      545      +31     

Impacted Files	Coverage Δ
packages/core/src/shader/ShaderProgram.ts	0.44% <0.00%> (ø)
packages/core/src/shader/ShaderData.ts	67.82% <74.35%> (+13.37%)	⬆️
packages/core/src/shader/Shader.ts	40.54% <100.00%> (+0.81%)	⬆️
packages/core/src/shader/ShaderProperty.ts	100.00% <100.00%> (ø)
...ckages/core/src/shader/enums/ShaderPropertyType.ts	100.00% <100.00%> (ø)
packages/core/src/Engine.ts	62.11% <0.00%> (-0.79%)	⬇️
packages/rhi-webgl/src/GLTexture.ts	35.75% <0.00%> (-0.19%)	⬇️
packages/core/src/shadow/ShadowUtils.ts	1.51% <0.00%> (-0.03%)	⬇️
...ckages/core/src/shadow/CascadedShadowCasterPass.ts	3.70% <0.00%> (+0.53%)	⬆️
packages/core/src/asset/ResourceManager.ts	15.47% <0.00%> (+1.19%)	⬆️
... and 19 more

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[gz65555]

Add Unit Test for new API getShaderProperties

Done