Tailscale v1.10 & GitHub Auth

Tailscale v1.10, primarily a bugfix and stabilization release, introduces the ability for users to sign up using their GitHub accounts and includes groundwork for future HTTPS certificate support. Key updates include a new macOS UI for LAN access while using an exit node, compatibility with macOS 12 and iOS 15 betas, and fixes for using Tailscale IPs as DNS servers on Android and iOS. The release also revisits Taildrop, which enables encrypted peer-to-peer file transfers within a Tailscale network. In a lighter note, the remote Tailscale team shares a custom Slack emoji inspired by their Friday gaming sessions to foster community engagement.