Added scripts/benchpress.toy

This file works in Toy v1 and Toy v2, but currently causes an SO.

See #171

scripts/benchpress.toy

@@ -0,0 +1,17 @@
+//calculate the nth fibonacci number, and print it
+//can't use functions yet
+
+var counter: int = 0;
+
+var first: int = 1;
+var second: int = 0;
+
+while (counter < 100_000) {
+        var third: int = first + second;
+        first = second;
+        second = third;
+
+        print third;
+
+        ++counter;
+}