jack trunk offset because he could not walk backwards (#773)

Author: texhnolyze

src/bitbots_motion/bitbots_quintic_walk/config/robots/jack.yaml

@@ -3,4 +3,4 @@
 walking:
   ros__parameters:
     engine:
-      trunk_x_offset: 0.0
+      trunk_x_offset: 0.01