[documentation] provide benchmark to demostrate statement in readme

your `readme` states

> Replaces the low-performing Flutter channel with faster and more concise code.

I care less about the "concise" part, but your claim that your solution is faster than the first party implementation is interesting
could you provide benchmarks that demonstrate your claim?

Additionally, how does this solution perform against [pigeon](https://pub.dev/packages/pigeon)?