deps: change termsize dependency to terminal_size

[niyaznigmatullin]

• termsize had no releases since 2017 and it uses old dependencies
• terminal_size is used by clap, so we depend from it anyway
• Removed termsize dependency and added terminal_size dependency
• termsize was only used in a single place
• This removed several other dependencies as well

[tertsdiepraam]

Kind of unrelated to this change, but it's pretty cool that terminal_size uses rustix and windows-sys instead of libc and winapi. Too bad this one doesn't support setting the terminal size. I decided to go with raw ioctl calls via nix for stty because we eventually need to set the size there too. I kinda wish one of these libraries would implement that in a cross-platform way.

[niyaznigmatullin]

Talking about that, I’ve made the dependency version 0.1 as it's used in clap version 3, and 0.1 uses winapi and libc. I thought we could bump it, when clap does it.

[sylvestre]

Well done for finding this issue