Refactor IRenderStateNotationParser

[TheMostDiligent]

In current implementation render state notation parser extracts state descriptions only, which requires extra effort from the application. It also introduces a lot of additional structs that largely duplicate core structs with only difference that instead of object pointers they use object names (e.g. pVS vs pVSName).
To make the render state notion API more convenient to use it is proposed to change the API as follows:

• Add pDevice member to RenderStateNotationParserCreateInfo
  • This could be a serialization device or any actual rendering device
• Add DeviceBits member that will only be used for archiver
• Replace all current methods Get*ByName and Get*ByIndex with Create and Create*ByIndex
• To make object creation more flexible, add callbacks to override the state:

struct ParsePipelineStateAttribs
{
    const char* Name = nullptr;
    Uint32 Index   = ~0u;

    void (*ModifyPipelineStateCreateInfo)(PipelineStateCreateInfo REF PipelineCI, void* pUserData) = nullptr;
};

VIRTUAL void METHOD(ParsePipelineState)(THIS_
                                        const ParsePipelineStateAttribs REF Attribs,
                                        IPipelineState* ppPSO) CONST PURE;

Similar for other object types.

This should make the parser API much more concise and convenient to use - API objects can be created directly, while required states can be easily overriden

[TheMostDiligent]

In GLTF viewer, these two functions are copy-pastes of one another.
The entire function should be just one call to pParser->CreatePipelineState()