New Feature: Correlation ID support

[scottjferguson]

I have a project where I need to return a correlation ID in an HTTP response, and the correlation ID is currently being generated where I end up returning Result.Error(). Would you be open to me adding a CorrelationId property? Alternatively, I'd also be open to a generic Property Bag using a Dictionary<string, object>. Thoughts?

[ardalis]

Hmm, both of these sound useful! How about the CorrelationId as a first-class property (typed as string I'm guessing?) and maybe open a separate issue requesting the property bag?

[scottjferguson]

Great, yes that's what I was thinking. First-class property as a string. I also created a separate issue for the PropertyBag #121.

I can work on both features. Will likely start today. Thanks @ardalis!

[scottjferguson]

Hey @ardalis, I have a new branch with this change that includes a new property typed as a string, a new factory method called ErrorWithCorrelationId() and a unit test. If you can add me as a collaborator I can push the branch for your review.

[ardalis]

Hey Scott, that's great! The usual approach with open source projects is for you to fork the repo to your own, make a new branch, put your cool new bits in there, and then pull request to this repo from your fork. Can you do that?

[scottjferguson]

Got it, this is my first time modifying someone else's code so I appreciate the guidance. I forked and created a pull request. Please let me know if anything else is required.