[PRP-347] Participant Documentation

[microwavenby]

Ticket

https://wicmtdp.atlassian.net/browse/PRP-347

Changes

What was added, updated, or removed in this PR.

• Documentation pages in /docs/participant
• New documentation pages rendered in storybook
• Breadcrumbed form page flow in Storybook

[microwavenby]

This is looking great! I've gone through and made a number of edits and suggestions. In addition, could you add documentation for these items:

* Document how local agencies are created in the database and how to replace those with the correct ones for "your WIC state agency"

* Document how to insert pages or remove pages from the routing structure

* How to change the session timeout

Added new readme file docs/participant/application.md to talk about routing, database, internationalization, and session

[github-actions[bot]]

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