Added a benchmark for JS

tests/benchmarks/fizzbuzz.js

@@ -0,0 +1,18 @@
+for (let counter = 1; counter <= 10000; counter++) {
+	let result = "";
+
+	if (counter % 3 == 0) {
+		result += "fizz";
+	}
+
+	if (counter % 5 == 0) {
+		result += "buzz";
+	}
+
+	if (result != "") {
+		console.log(result);
+	}
+	else {
+		console.log(counter);
+	}
+}