consolidate TextArea components
This was first discussed in the design repo in issue 27, 3 months ago.
Since then, a TextArea has been created separately in each xpub:
- EMPC - shared via an MR: !350 (merged)
- eLife - code | styleguidist
- Hindawi - codebase (note: Hindawi does not separate their folders into atoms & molecules)
- Collabora - unsure but I don't think so (all atoms and molecules live in separate pubsweet components/packages)
A great example of why issues should be raised in this repo instead of the design repo