Add and configure Styleguidist

**Describe the task**
Storybook was removed because it had dependencies that clashed with CRA and `react-scripts`.

React Styleguidist is an alternative that installs and runs without issue (at least it did on
https://github.com/bcgov/wps/commit/4f9502765ca94188ae915ff3e36f5e03263be376)
**Acceptance Criteria**
- [ ] Install styleguidist
- [ ] Configure styleguidist to pick up our components

**Additional context**
- Tried React Cosmos already, has webpack runtime issues
- https://react-styleguidist.js.org
- https://react-styleguidist.js.org/docs/components

Review the existing CRA/react-scripts setup and locate the project’s React components, then compare the configuration options in the linked React Styleguidist documentation. Install Styleguidist, configure it to discover the components, and verify that its component guide starts and displays them without the dependency conflicts described for Storybook.

Written by the indexing model from the issue text.