added formatter

src/main/java/earth/krakatoa/core/util/Formatter.java

@@ -0,0 +1,19 @@
+package earth.krakatoa.core.util;
+
+import java.math.BigInteger;
+import java.util.UUID;
+
+public class Formatter {
+
+  public String formatUuid(String uuid) {
+    return uuid.replaceAll("-", "");
+  }
+
+  public UUID stringToUuid(String s) {
+    BigInteger bigInteger = new BigInteger(s.substring(0, 16), 16);
+    BigInteger bigInteger1 = new BigInteger(s.substring(16, 32), 16);
+
+    return new UUID(bigInteger.longValue(), bigInteger1.longValue());
+  }
+
+}