implement popover form in browser extension

[dillonstreator]

When the context menu item is selected in the browser extension, render a minimal popover form where the user can input the supported form fields from the website https://www.crypt.fyi/new

This may be a good time to introduce a new package @crypt.fyi/react to share components and improve code reuse

Related:

• Create a browser extension for quick in-context secret link creation #5
• add v0 browser extension #42