Export types in @visx/text

[jrmyio]

Currently @visx/text does not export its types. So the following does not work:
import { TextProps } from '@visx/text';

This PR adds the exporting of those types.

Ugly work-around until then:

import { Text } from '@visx/text';
Parameters<typeof Text>[0]>

[williaster]

Thanks for the addition @ConneXNL 🙏 Looks good to me, we'll get it merged and released by end of day.

FYI a slightly less gross (but gross nonetheless) workaround for now is a deep import like import { TextProps } from '@visx/text/lib/types';

[github-actions]

🎉 This PR is included in version v1.7.0 of the packages modified 🎉