Injecting the metrics and log adapter into the Worker object

Hi there,

At the moment, some of the usages of the log and metrics adapters reference the global variables `Temporal.log` and `Temporal.metrics` respectively. This means that the configuration can't be overridden by passing different adapters in the configuration into the `Worker` constructor.

Example: https://github.com/coinbase/temporal-ruby/blob/101ec13947a0c2c9bc1754de87aeaf7c697fb54f/lib/temporal/activity/task_processor.rb#L28-L29

I've noticed that there are more and more things are starting to be injected via the `Worker`. Is doing the same thing with these adapters possible? Would you accept a change which added that?

Thanks!