Adding ceil to NumberConversions

By: Wesley Wolfe <weswolf@aol.com>

paper-api/src/main/java/org/bukkit/util/NumberConversions.java

@@ -11,6 +11,11 @@ public final class NumberConversions {
         return floor == num ? floor : floor - (int) (Double.doubleToRawLongBits(num) >>> 63);
     }
 
+    public static int ceil(final double num) {
+        final int floor = (int) num;
+        return floor == num ? floor : floor + (int) (~Double.doubleToRawLongBits(num) >>> 63);
+    }
+
     public static int round(double num) {
         return floor(num + 0.5d);
     }