add layout to rfp sidebar + breadcrumbs

[kristencheung]

What's included in this pr + description

added breadcrumbs to rfp sidebar to help users navigate to the different pages

[linear[bot]]

WEB-928 Navigation: add a "<-" on the form page to navigate back to the RFP page

[0ead0695-217e-4f8b-a9b1-7bf73a184e94](https://uploads.linear.app/e186bf5f-a55d-4799-9233-adcf54b8efd4/736890b7-e8a1-446d-9f5d-f54227b21b62/0ead0695-217e-4f8b-a9b1-7bf73a184e94)

[vercel[bot]]

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Name	Status	Preview	Updated
web	✅ Ready (Inspect)	Visit Preview	Nov 22, 2022 at 6:41AM (UTC)