custom kb and combo fly with tick between hits customizable by zones

added zone kb and combo fly, also with combo fly, you can set the ticks betwen hits.

NOTE: combo fly options doesnt work as expected when players have different swords or effects(like strenght or resistance), because it has a dmg set, so if u add this make sure that the zone forces everyone to have same swords or/and same effects, if not a wooden sword will do same damage as a diamond sword, so you will have to set the damage to the basic sword in that zone. ill work to see if you can do the expected damage with no need to change it on the menu