Support diffing binaries

[orhun]

Is your feature request related to a problem? Please describe.

The idea is to give multiple binaries to binsider and support seeing the differences between those binaries, similar to what https://diffoscope.org is doing.

Describe the solution you'd like

As a first step, we can implement accepting multiple files via args and support selecting files with a menu inside binsider.
Then we can either use diffoscope as a library or implement the same functionality in Rust.

The UI for this feature is not decided yet.

Describe alternatives you've considered

None.

Additional context

See https://diffoscope.org