Add gnome-terminal as terminal emulator

[tcaiazzi]

We need to add specific support to gnome-terminal as terminal emulator.

Kathara/src/Kathara/cli/ui/utils.py

Lines 91 to 112 in d910504

	def unix_connect() -> None:
	if terminal == "TMUX":
	from ...trdparty.libtmux.tmux import TMUX
	logging.debug("Attaching `%s` to TMUX session `%s` with command `%s`" % (machine.name, machine.lab.name,
	connect_command))
	TMUX.get_instance().add_window(
	machine.lab.name,
	machine.name,
	connect_command,
	cwd=machine.lab.fs_path()
	)
	else:
	logging.debug("Opening Linux terminal with command: %s." % connect_command)
	# Command should be passed as an array
	# https://stackoverflow.com/questions/9935151/popen-error-errno-2-no-such-file-or-directory/9935511
	subprocess.Popen([terminal, "-e", connect_command],
	cwd=machine.lab.fs_path(),
	start_new_session=True
	)

Indeed, in the unix_connect function, the -e option we use to pass the connect_command to the terminal will be deprecated for gnome-terminal in the future.
We need to use -- to terminate the options and put the connect_command to execute after it.