✨ Add input textarea component

[XuTheBunny]

Motivation

Create input textarea field with character count option.

Use Cases

1. Kids First Data Tracker
   

2. Kids First Coordinator
   
   

3. Kids First website
   

API changes

No API changes are made on this component.

Implementation Notes

The validation for input value would be handled by the app. To show the error message, pass the string to error prop.
Textarea size would expand with its container.

Rendering and Storybook location

src/
└── components
    ├── InputTextarea
    │   ├── __tests__/
    │   ├── InputTextarea.jsx
    │   ├── InputTextarea.story.jsx
    │   └── InputTextarea.css
    └── index.js

Functional Tests

Test input textarea component with all prop value combinations.

[dankolbman]

UIKit Storybook for Review

Built with commit a4b1a0c

https://deploy-preview-128--kf-uikit.netlify.com

[dankolbman]

Not sure why, but the error wasn't being displayed for me in the storybook.
Also, do we want the label to align to the bottom of the box? It seems more helpful it it's at the top in the case of a really long text box.