Fix crash when you pass an invalid slot number

java.lang.ArrayIndexOutOfBoundsException: Index -4 out of bounds for length 36
	at java.base/java.util.Arrays$ArrayList.get(Unknown Source)

src/main/java/meteordevelopment/meteorclient/utils/misc/MeteorStarscript.java

@@ -387,6 +387,7 @@ private static Value getItem(Starscript ss, int argCount) {
         if (argCount != 1) ss.error("player.get_item() requires 1 argument, got %d.", argCount);
 
         int i = (int) ss.popNumber("First argument to player.get_item() needs to be a number.");
+        if (i < 0 || i > 35) ss.error("First argument to player.get_item() needs to be between 0 and 35 (inclusive).", i);
         return mc.player != null ? wrap(mc.player.getInventory().getStack(i)) : Value.null_();
     }