g-add: add missing with-term script

lib/with-term

@@ -0,0 +1,18 @@
+#!/bin/zsh
+
+if [[ "${0:t}" == "with-term" ]]; then
+	echo "Symlink to g\$progname to start \$progname in a new terminal"
+	echo "See g for launching with tmux"
+	exit 1
+fi
+
+if [[ -e /etc/zsh/zprofile ]]; then
+	. /etc/zsh/zprofile
+fi
+if [[ -e $HOME/.zshenv ]]; then
+	. $HOME/.zshenv
+fi
+
+prog=${${0:t}[2,-1]}
+
+exec x-terminal-emulator -t G${prog} -e $prog