Web tester and protocol buffers api

[gedw99]

Would you like a web tester ( just a simple index.html and a protocol buffers ali server ?

it will make it easy for devs to see how this works.

we can then also do real world testing by rolling out golang clients to 26 locations with fly.io and then from a simple CLI call all of them and hence check they all get the correct answers using the global fly.io network.