Add RandomTools class and betweenTwoIntegers function

Author: Diamondback88

api/src/main/java/parallelmc/parallelutils/util/RandomTools.java

@@ -0,0 +1,21 @@
+package parallelmc.parallelutils.util;
+
+import java.util.Random;
+
+/**
+ * A helper class for functions related to obtaining random values
+ */
+public class RandomTools {
+
+    /**
+     * Calculates a random integer between two integer values
+     * @param low The first integer
+     * @param high The second integer
+     * @return The random integer between low (inclusive) and high (exclusive)
+     * For example, if low = 3 and high = 6, possible results could be 3, 4, or 5
+     */
+    public static int betweenTwoIntegers(int low, int high) {
+        Random r = new Random();
+        return r.nextInt(high-low) + low;
+    }
+}