Add `bird home` command to fetch the authenticated user's home timeline.
- Supports "For You" feed (default) and "Following" feed (--latest)
- Uses HomeTimeline and HomeLatestTimeline GraphQL operations
- Includes count option (-n), JSON output, and pagination
Usage:
bird home # Get "For You" feed
bird home --latest # Get "Following" (chronological) feed
bird home -n 50 # Fetch 50 tweets
