Add Wasm Metrics

[rockwotj]

I have been running some WebAssembly benchmarks and have a WIP dashboard for this. I would love to get this integrated into this repo:

Ideally the main dashboards are updated to include wasm traffic (for example wasm throughput is tracked seperately from kafka client throughput).

Wasm-Dashboard.json

[rockwotj]

/cc @vuldin I had mentioned this last week

[vuldin]

Amazing, thanks for posting the dashboard here. I also have some updates to the existing dashboards around migrating them to newer grafana charts (and removing old angular dependencies). I can include this dashboard in that PR if you don't create a PR before then, and then also add to grafana.com

[hcoyote]

Not sure if it matters, there appears to be a few empty data source tags in the json that cause our json->jsonnet decompiler to choke, The original json looks valid, but adjusting them to include the same data source as most everything else in the dashboard.

wasm.json