Adds method tracing helper

[ronan-mch]

This PR adds a new module to ddtrace. MethodTracing allows developers to quickly add tracing to their classes without muddying up their code with trace blocks.

Example usage

class FizzBuzz

  extend Datadog::MethodTracing
  trace_methods self, :fizz, :buzz

  ...
end

[marcotc]

Also, so much has changed since you last rebased, you might want to update your branch with master too.

[ronan-mch]

@marcotc - is this mergeable?

[delner]

I'll take a look at this, see if we can merge it.

[ronan-mch]

I'll take a look at this, see if we can merge it.

@delner - any update on this?

[delner]

Sorry haven't had the chance yet. Will try to make some time.

[ronan-mch]

Closing as I'm no longer working in a company that uses Datadog.

[ivoanjo]

Thanks for the contribution and food for thought! We definitely will reference this PR and discussion in the future, and I wish you well in your new endeavour :)

[ronan-mch]

Thank you! I'm ashamed to admit that I'd forgotten all about this PR until I reviewed my open PRs recently...

[ivoanjo]

Thank you! I'm ashamed to admit that I'd forgotten all about this PR until I reviewed my open PRs recently...

:rofl: yeah, definitely can relate on this one!