pass the command name to the Command constructor
autocommands for making command and pane

MaqueCommandMake will be invoked when Command.make() is called. The
variable g:maque_making_command will contain the command name while the
command is running.

MaqueTmuxMake is invoked when maque#tmux#make_pane() is called. The
temporary variables g:maque_making_pane and g:maque_making_cmdline
contain the pane name and executed command line.