Provide an example command-line app

[Demi-Marie]

We should provide an example command-line tool that demonstrates using yamux. The first one that comes to mind is a socket forwarder: it listens on a socket (AF_UNIX or TCP) on one side, and multiplexes connections over stdio to its peer, which connects to a socket passed as a command-line argument.

[hilt0n]

I would propose as first example the same as in the initial Go version library from Hashicorp (https://github.com/hashicorp/yamux#usage).
The example in the README runs in less than 5 minutes and it would be nice to have a similar and compatible example in this repo.

[mxinden]

I would propose as first example the same as in the initial Go version library from Hashicorp (https://github.com/hashicorp/yamux#usage).

Example looks like a good first start to me. @hilt0n would you like to create a pull request?

[hilt0n]

I just discovered Yamux, started diving into your lib and async Rust at the same time but once I'm more in confidence, I will try to create that.

[mxinden]

Cool. Let us know whenever you have questions @hilt0n!

[nwtgck]

Thank you so much for creating yamux in Rust implementation.

I need yamux CLI and made it.
Repository: https://github.com/nwtgck/yamux-cli-rust/tree/a3ce29

See some examples in REAME to know how it behaves and src/main.rs for the implementation. The CLI is designed like netcat for combining commands with Unix pipes beautifully.

I keep the code simple. I hope it would help someone to use yamux in Rust.