[UI] Extract our ColorSample and Tag components from twenty-front to twenty-ui. (#5543)

Two more components extracted out of twenty-front: `ColorSample` and
`Tag`.

packages/twenty-ui/src/theme/index.ts

@@ -33,3 +33,4 @@ export * from './constants/ThemeLight';
 export * from './provider/ThemeProvider';
 export * from './types/ThemeType';
 export * from './utils/getNextThemeColor';
+export * from './utils/themeColorSchema';