Useless 80s Retro Spinning Donut

This is my second approach to implement Spinning Donut. Previous version can be seen here. This time I choose Rust as my language for the learning purpose. Apart from that the project is completely useless as repository name suggests . There are couple of reasons for that:

1. it does literally nothing
2. if you do not like 80s retro style it doesn't even look good

The donut can be rendered in two different color schemas: DAY and NIGHT. You can control it by passing proper arg to the program: cargo run -- day or cargo run -- night.

References

1. https://www.a1k0n.net/2011/07/20/donut-math.html
2. https://en.wikipedia.org/wiki/ANSI_escape_code
3. https://doc.rust-lang.org/book/