New User: rustic, fast, encrypted, and deduplicated backups powered by Rust

[Xuanwo]

https://github.com/rustic-rs/rustic

rustic is a backup tool that provides fast, encrypted, deduplicated backups.
It reads and writes the restic repo format described in the design document and can be used as a restic replacement in most cases.
It is implemented in Rust, a performant, memory-efficient, and reliable cross-platform systems programming language.

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This user is a follow-up of #4004.

[simonsan]

Release is out, btw.: https://github.com/rustic-rs/rustic/releases/tag/v0.7.0 <3