Provide deeper observability to instance performance

What data we have:

> Looking at the code, the nr-launcher keeps a rolling average of the memory and CPU usage for the last 5min (sampling every 10 seconds, keeping 30 samples), this is what it uses to trigger the audit log entries.

> We can get poll the nr-launcher for the last 1000 samples (~2.7 hours) we could increase this is helpful
>
> The samples are as follows:
>
> {
> "cpu": 0.3374200000007477,
> "ps": 83.44921875,
> "ela": 0.010179761270875764,
> "el99": 0.011206655,
> "hs": 1048576,
> "hu": 248272,
> "ts": 1721203420046
> }
> - ps Process total size
> - hs Heap Size
> - hu Heap Used
> - ts timestamp
> - cpu % cpu usage in the last sample
> - ela event loop lag average
> - el99 event loop lag 99th percentile

Could provide a "Performance" tab for Instances (maybe devices?) that details the CPU utilisation, etc. and warns users of performance problems. Better helping them investigate issues in their flows.