feat: Proposal Form

[helmturner]

The proposal form needs to be finished and 'wired up' (for now it can just be a POST request to example.com that logs the data to the console). Optionally we can add character limits and form validation where appropriate. Bonus if the form doesn't reset on page refresh!

A monospace font might be a nice touch for the text entry field, to subtly indicate that Markdown is supported (even though we can't show a preview yet, or other 'editor' features).

The data submission should include:

• Author email (doesn't have to be manually entered, logged in user info will be provided via props/hooks)
• Title
• Summary
• Description
• Type (RFC | proposal)
• Status (draft | petition | accepted)

[zenlex]

@helmturner do you think we should also have them submit their name so we don't just have email to display? (could be optional and for display purposes only)

[RossaMania]

I think a name is a good idea! It could be a nickname or just a first name.