Added travel using an elytra feature, the RepairToolTask and some edi…

…ts around that

gaucho-matrero#194

src/main/java/adris/altoclef/util/helpers/EntityHelper.java

@@ -62,6 +62,16 @@ public static boolean isTradingPiglin(Entity entity) {
         return false;
     }
 
+    /**
+     * Return true if the entity is on ground (or in water)
+     */
+    public static boolean isGrounded(AltoClef mod, Entity entity) {
+        return entity.isSwimming() || entity.isTouchingWater() || entity.isOnGround();
+    }
+    public static boolean isGrounded(AltoClef mod) {
+        return isGrounded(mod,mod.getPlayer());
+    }
+
     /**
      * Calculate the resulting damage dealt to a player as a result of some damage.
      * If this player were to receive this damage, the player's health will be subtracted by the resulting value.