feat(util): re-export commonly used chakra utils

Author: psychedelicious

lib/util/chakra-util.ts

@@ -0,0 +1 @@
+export { cssVar, forwardRef } from '@chakra-ui/react';

lib/util/index.ts

@@ -1,3 +1,4 @@
+export { cssVar, forwardRef } from './chakra-util';
 export { skipMouseEvent } from './skip-mouse-event';
 export { stopPastePropagation } from './stop-paste-propagation';
 export { typedMemo } from './typed-memo';