`Color` is missing `gradient` member

[carson-katri]

This could be added as a modifier to StylesheetResolvableShapeStyle:

liveview-client-swiftui/Sources/LiveViewNative/Stylesheets/ResolvableTypes/SwiftUI/Styles/ShapeStyle.swift

Lines 29 to 33 in e63af86

	enum Modifier: @preconcurrency Decodable {
	case hierarchical(HierarchicalModifier)
	case blendMode(BlendModeModifier)
	case opacity(OpacityModifier)
	case shadow(ShadowModifier)

https://developer.apple.com/documentation/swiftui/color/gradient