Add Searchcaster extension

[gskril]

trafficstars

Description

An extension to easily search for posts on Farcaster, a social networking protocol.

Screencast

https://user-images.githubusercontent.com/35093316/188496879-3c1ec688-03be-47db-9733-3d3abb315939.mp4

Checklist

• [x] I read the extension guidelines
• [x] I read the documentation about publishing
• [x] I ran npm run build and tested this distribution build in Raycast
• [x] I checked that files in the assets folder are used by the extension itself
• [x] I checked that assets used by the README are placed outside of the metadata folder

[raycastbot]

Congratulation on your new Raycast extension! :rocket:

We will review it shortly. Once the PR is approved and merged, the extension will be available on the Store.

[raycastbot]

Published to the Raycast Store: https://raycast.com/gregskril/searchcaster