Add support for Beads_Rust

[AdityaVG13]

For Kanban,

Please add support for Beads_Rust (https://github.com/Dicklesworthstone/beads_rust), a rust implementation of beads (br init).

Thanks,
Aditya

[maddada]

Hey Aditya :)

What's the difference? I'm usually using the normal one.

If you do a PR for this where I can switch the beads library between the rust and the original one I'll merge it in, I can implement it easy but it's very hard to test this.

Only thing is if you see the latest code we're not bundling beads anymore so it's downloaded when the user needs it so just keep that in mind, user should be able to somehow select which one to use.

I think it should allow using beads from the machine not from the one bundled in the app itself.