add itemSaver setting.

Signed-off-by: scorbett123 <sam@corbettchocolates.com>

src/main/java/baritone/utils/ToolSet.java

@@ -18,6 +18,7 @@
 package baritone.utils;
 
 import baritone.Baritone;
+import baritone.api.utils.Helper;
 import net.minecraft.block.Block;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.entity.EntityPlayerSP;
@@ -124,6 +125,9 @@ public class ToolSet {
         IBlockState blockState = b.getDefaultState();
         for (int i = 0; i < 9; i++) {
             ItemStack itemStack = player.inventory.getStackInSlot(i);
+            if (itemStack.getItemDamage() >= itemStack.getMaxDamage() - 1 && Baritone.settings().itemSaver.value) {
+                continue;
+            }
             double speed = calculateSpeedVsBlock(itemStack, blockState);
             boolean silkTouch = hasSilkTouch(itemStack);
             if (speed > highestSpeed) {