Add carla-libdir script, unused for now

data/carla-libdir

@@ -0,0 +1,7 @@
+#!/bin/sh
+# small script that only prints carla's libdir.
+# can be used to detect if carla is installed, and where to find its libcarla_standalone2.so file
+
+CARLA_LIBDIR="X-LIBDIR-X"
+printf -- "%s" ${CARLA_LIBDIR}/carla
+exit 0