Replace getch with a cross-platform alternative.

[Himyag-Barthel]

When I'm installing one of your other command-line applications, whenever installing Badges, it will return:

error: subprocess-exited-with-error

  × Building wheel for getch (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [3 lines of output]
      getchmodule.c
      getchmodule.c(2): fatal error C1083: Cannot open include file: 'termios.h': No such file or directory
      error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\18\\BuildTools\\VC\\Tools\\MSVC\\14.50.35717\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for getch
Successfully built pex hatasm badges colorscript
Failed to build getch
error: failed-wheel-build-for-install

× Failed to build installable wheels for some pyproject.toml based projects
╰─> getch .

I believe that replacing Getch with a multi-platform alternative may allow your application to run on Windows.

I know I could download badges directly and replace it with py-getch, but I believe that others who want to use this on windows would like to not have to edit somebody else's code.