Make a usable version of getEventByCorrelationId

[TheAngryByrd]

This adds @baronfel's Newtonsoft.Json.FSharp.Idiomatic to provide custom JsonConverters that are more friendly for F# serializing.

without these custom converters, Marten will save in the database:

"CorrelationId": {"Case": "Some", "Fields": ["01d6c038-202e-4b60-8568-adbd881d38a8"]}

with custom converters, it becomes more normal

"CorrelationId": "01d6c038-202e-4b60-8568-adbd881d38a8"

Now that the json that gets serialized turns out to be more predictable, we can use raw sql to query the EventRead table easily.

Although this doesn't use Martens Linq generation, it's the quickest option to getting a production ready version.

[Dzoukr]

Thanks @TheAngryByrd !!!