Add simple benchmark runner.

resources/examples/benchmarks.c3

@@ -0,0 +1,29 @@
+import std::thread;
+
+fn void! bench1() @benchmark
+{
+    return std::thread::sleep_ms(1);
+}
+
+fn void! bench123456789() @benchmark
+{
+    return std::thread::sleep_ms(2);
+}
+
+fn void! long_name_bench() @benchmark
+{
+    return std::thread::sleep_ms(3);
+}
+
+fn void! very_long_name_bench() @benchmark
+{
+    return std::thread::sleep_ms(10);
+}
+
+static initialize
+{
+    set_benchmark_warmup_iterations(5);
+    set_benchmark_max_iterations(1000);
+}
+
+