ANNOUNCE: Cjdns Release v22.1

Major changes:
* DNS Seed auto-peering means you no longer need to add peers. You can still manually peer, and you can disable DNS seeding in the config, but default configs going forward will seed from a list of public peers which is here: https://vinny.cjdns.fr/ptest/
* Cjdnstool binary is now built with cjdns, making administration easier.

Minor changes:
* Libuv is completely removed, all OS bindings are through Rust/Tokio.
* SECCOMP BPF is no longer part of the security strategy.

Where to download:
* Linux: https://github.com/cjdelisle/cjdns.sh makes it easy to run a node, including public peer.
* MacOS: As soon as this PR lands https://github.com/Homebrew/homebrew-core/pull/203576 , `brew install cjdns` will be enough.
* Source: https://github.com/cjdelisle/cjdns required a C compiler, Rust, NodeJS, make, and linux-headers in order to build.

Special thanks:
* To the PKT community for contributing public peers for seeding.
* To those who contributed to tip4commit https://tip4commit.com/github/cjdelisle/cjdns thanks to you, my rent is paid for this month ❤️