Request to migrate away from legacy packages

[iSaluki]

This project uses the following legacy crates:

• clipboard
• isatty

I am currently interested in packaging jless for the Fedora repositories, but I cannot do so until these packages are upgraded for something that is actively maintained.

[decathorpe]

Note that libc-stdhandle is also obsolete, and has not been updated in 6 years.
Is there a reason why the safe std::io::stdin / std::io::stderr / std::iostdout` functions from the Rust standard library cannot be used instead?

[iSaluki]

I'll treat libc-stdhandle as in need or replacement too. I'm currently (slowly) working on making these improvements over here: https://github.com/iSaluki/jless