Map legacy palette tokens to variables

[pseys]

Map legacy palette level tokens to variables using the legacy color palette variables and publish to Salt team only

• Map legacy palette tokens to variables (1)
• Associate each legacy palette variable to a color variable from the Salt (legacy) color library
• Publish to Salt Design System only (2)

1. In a new file, in the Salt (legacy) color library or in Salt (next) styles library?
2. If publishing as a new file ensure the file is marked as UNSTABLE until QA'd

Dependent on #3843

[pseys]

If created as a new file:

• Will need to be published
• Will appear as another library within Salt Design System
• When applying variables will appear as coming from a separate file to all other Style Options within the component and pattern library
• The color library can be published to the whole org thee same as the Salt (next) color library

If added to Salt (legacy) Color Library:

• Will need to be published
• Will appear as another library within Salt Design System
• When applying variables will appear as coming from a separate file to all other Style Options within the component and pattern library
• Means the color library cannot be opened up to the whole org as it would contain significant amount of noise, unlike the Salt (next) color library

If added to Salt (next) Styles Library:

• Can be hidden from publishing, the same as the Next palette variables
• Will not appear as a separate library within Salt Design System as it will be contained with the styles library
• When applying variables will appear as coming from the same file as all other Style Options within the component and pattern library
• The color library can be published to the whole org thee same as the Salt (next) color library

[pseys]

Closed as part of #3846