Added Haversine distance operation

This operation calculates the great circle distance between two GPS co-ordinates, returning the value

test/tests/operations/HaversineDistance.mjs

@@ -0,0 +1,22 @@
+/**
+ * Haversine distance tests.
+ *
+ * @author Dachande663 [dachande663@gmail.com]
+ * @copyright Crown Copyright 2018
+ * @license Apache-2.0
+ */
+import TestRegister from "../../TestRegister";
+
+TestRegister.addTests([
+    {
+        name: "Haversine distance",
+        input: "51.487263,-0.124323, 38.9517,-77.1467",
+        expectedOutput: "5619355.701829259",
+        recipeConfig: [
+            {
+                "op": "Haversine distance",
+                "args": []
+            }
+        ],
+    }
+]);