Semantic colors codemod

[martimalek]

What

Adds a codemod to automatically migrate usages of SemanticColors and themeGet to getSemanticValue

SemanticColors example
From

SemanticColors.button.primary.backgroundDisabled

to

getSemanticValue('background-element-disabled-default')

themeGet example
From

themeGet('semanticColors.text.primary')

To

getSemanticValue('foreground-primary')

Why

To ease the migration effort throughout our codebase

​

How

• Create semantic-colors-to-new-theme codemod
• Dropped table.zebraStyles.backgroundSecondary color, it is not used in any project

Closes #395