Introduce adapter timeout tracking

[geeknoid]

We need to detect if an adapter has stop being responsive by tracking execution timeouts.

Ideally, we maintain per-adapter configuration state with the max execution time allowed for calls into the adapter. The critical call to check is the runtime HandleXXX call, but it may be best to impose a timeout on all calls into adapters.

When a timeout is found to be triggered, we should log the occurrence. If a timeout happens too frequently, we should move the adapter into a "bozo" queue and stop scheduling requests for it.