[Feat]: Update generator for theme aware SVG requirement and deprecation of PNG/JPG usage

[MattBerg11]

Generators need to be updated to account for recent breaking changes

• Root key "icon": "icon/sample-icon.svg" SVG path relative to what the SVG will be in dist
• SVG must be be copied to dist folder "copy-icon": "shx cp -r icon/ dist/icon/",