Draft integration with IORuntimeMetrics

[iRevive]

trafficstars

The dirty implementation based on https://github.com/typelevel/cats-effect/pull/3317.

The output is:

// compute
active-thread-count          = value=1
worker-thread-count          = value=8
blocker-worker-thread-count  = value=6
local-queue-fiber-count      = value=0
searching-thread-count       = value=0
suspended-fiber-count        = value=9

// starvation
cpu-starvation-count         = value=0
current-clock-drift-ms       = value=0
max-clock-drift-ms           = value=0

Once I come up with a more reasonable workload idea, the data should look better.

[iRevive]

The MBean version (JVM only) is available here - https://github.com/typelevel/otel4s-experimental?tab=readme-ov-file#1-iometrics---cats-effect-runtime-metrics.