Build contact form

[harumhelmy]

Not MVP per Katie's comment in #28

[danblah]

just tried it but don't know if it worked or not? @gt150 did you get emails?

[harumhelmy]

Ah, I should have clarified! The form's not set up to trigger an email, it's instead set up to send each submitted message directly to the Sanity CMS, under "Contact form submissions".