Create WASM based demo of Shotover

[benbromhead]

It would be super cool to let people play with shotover in a sort of WASM powered demo that runs right here in their browser. For example see https://supabase.com/blog/postgres-wasm.

There are a few ways to go about this

1. would be to have everything run in a WASM based virtual machine. This would be the easiest in terms of getting a Cassandra / Kafka node running (running in a VM for the JVM is probably simplest). Though this is likely to be quite a big download.
2. Compile all the deps to native WASM (including the JVM, shotover etc) and run directly. This is probably madness, but could be interesting (see https://linuxtut.com/en/ed1b7c139e7e9749e264/)

The end product would run say a single cassandra instance, a single redis instance, shotover and then some sort of client, to demonstrate everything happening in the backend.

If we actually just wrote some WASM based VM that would take a docker compose file and just run it... that would be super cool and easy to run the demos.