Create a buffer per command

[TristanCacqueray]

Hello, would it be possible to add the command name to the *just* buffer so that we can run multiple long running commands in parallel?

For example, given a ghcid and format command, just.el would create one buffer per command:

• *just-ghcid*
• *just-format*

[psibi]

I see what you mean. This should be trivial to implement but I would prefer an optional opt-in via defcustom as I don't want to populate emacs instance with lots of different just buffers. I would be happy to accept a PR for the same.