message: Add get/set gas used for benchmark
diff: @@ -179,9 +179,8 @@ fn get_compiler(_limit: u64, metering: bool) -> impl Compiler {
  fn gas(ctx: &mut Ctx, gas_amount: u32) {
  use wasmer_middleware_common::metering;
  - // TODO read gas field
  - let used = 100;
  - let new = used + gas_amount;
  + let used = metering::get_points_used_ctx(ctx);
  + metering::set_points_used_ctx(ctx, used + u64::from(gas_amount));
  ()
  }
  