This component will be used to talk to BASE_LANDING_URL/connect-farcaster route that was just introduced prior in this stack. Based on the FarcasterWebViewMessage type this webview will either redirect the user to the farcaster app if they have it, safari with a link to download the app if they don't have farcaster, or return the user's fid to the onSuccess callback if the farcaster user data is returned back to the webview
Also in this diff I snuck in factoring out some shared types into their own file rather than copying + pasting the same type across different files
Depends on D11429