Shader Authoring in VSCode

[superkitcath]

[Migrated from JIRA ATOM-5434]
Description:

Provide plugins for VSCode to improve shader authoring experience.

Details:

Acceptance Criteria:

• Provide AZSL syntax highlighting
• Provide auto-completion
• Link to the shader in Asset Processor
• Link to the shader in the Shader Variant Management Console
• Provide a dedicated shader compilation result interface where we have more control over how the results are displayed. (rather than AP's event log)
• Users can click a link or button to open a failed AZSL file and jump to the problematic line.
• Stretch: Provide an interactive graphical view of the shader compilation pipeline that shows AZSLc, DXC, Spirv-Cross, etc in a flow chart. This can show where a shader complation failure occurred and other debug information.
• others?...

Additional Information:

A prototype by @jeremyong-az
https://www.jeremyong.com/graphics/parsers/hlsl/azsl/2022/01/02/azsl-intellisense-prototype/