Replace libssh2 with libssh?

[braden-godley]

As someone who uses a non-standard SSH agent (which I have configured in ~/.ssh/config) I cannot use Gitui, due to the usage of libssh2. I store my SSH keys in 1Password which acts as my SSH agent. Due to security concerns, I will not be able to employ any workarounds to avoid this.

libssh2 does not read your ~/.ssh/config file, which makes non standard SSH agents not work with Gitui. I created an issue yesterday #2216 and found that this is a longstanding issue with libssh2. On the other hand, libssh does read your ~/.ssh/config file, which would solve this problem for me and possibly many others. There is already a Rust crate that exposes libssh bindings: https://crates.io/crates/libssh-rs/0.1.2

Would it be a good idea to replace the libssh2 dependency with libssh?