[native] introduce FarcasterPrompt

Summary:
This diff introduces the FarcasterPrompt component. The FarcasterPrompt component renders the FarcasterLogo component as well as two other text elements explaining to the user what the benefits are of connecting their comm account to their farcaster account

Depends on D11434

Test Plan:
Please see screenshot to see what the component looks like

Reviewers: atul

Reviewed By: atul

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D11441