[keyserver] add frog, hono, @hono/node-server as keyserver dependencies

Summary:
Add frog, @hono/node-server, hono as keyserver dependencies

This is part of https://linear.app/comm/project/replace-farcaster-bot-reply-with-a-frame-21d3c6bcfc27/issues

Depends on D14091

Test Plan: keyserver properly runs. We're not using these dependencies in this diff so there shouldn't be anything to test

Reviewers: ashoat, varun

Reviewed By: ashoat

Subscribers: tomek

Differential Revision: https://phab.comm.dev/D13926