Add more benchmarks.

scripts/fibonacci.rhai

@@ -0,0 +1,22 @@
+// This script calculates the n-th Fibonacci number using a really dumb algorithm
+// to test the speed of the scripting engine.
+
+const target = 30;
+
+let now = timestamp();
+
+fn fib(n) {
+    if n < 2 {
+         n
+    } else {
+        fib(n-1) + fib(n-2)
+    }
+}
+
+print("Ready... Go!");
+
+let result = fib(target);
+
+print("Fibonacci number #" + target + " = " + result);
+
+print("Finished. Run time = " + now.elapsed() + " seconds.");