[Component] InputTextArea Component for Storybook docs

[dalecreativ]

TODO:

• [x] Move the InputTextArea component from coop-ds-storybook to this repo, under the react-ui package
• [x] Remove the pcss imports from jsx
• [x] Remove the pcss file from component directory
• [x] Have component styles installed at react-ui package root level as a package dependency
• [x] Import component style .pcss at a global level in .storybook/preview.js
• [x] Have stories attached to the component that cover all states of the component
• [x] Add tests for the component using jest and testing-library/react
• [x] Remove any static html examples from component directory
• [x] Avoid any state management work for the time being, if it can be avoided.