fix: enable Croatoan function-keys-enabled-p for arrow/page keys

Add (setf (function-keys-enabled-p input-win) t) and for chat-win,
otherwise Croatoan returns raw escape sequences instead of :up,
:down, :ppage, :npage keywords.

Also symlink project into quicklisp/local-projects so
ql:quickload :passepartout/tui works without manual ASDF push.

lisp/gateway-tui.lisp

@@ -193,6 +193,8 @@
                (chat-win (make-instance 'window :height chat-h :width (- w 2) :y status-h :x 1))
                (input-win (make-instance 'window :height input-h :width (- w 2) :y (- h input-h 1) :x 1)))
           (setf (input-blocking input-win) nil)
+          (setf (function-keys-enabled-p input-win) t)
+          (setf (function-keys-enabled-p chat-win) t)
           (reader-start *stream*)
           (loop :while *is-running* :do
             (let ((msgs (message-queue-drain)))