Ingestion using the API client

[thnk2wn]

Love the API - it'd be great if this supported Raw event import i.e. https://docs.datalust.co/docs/posting-raw-events or another API client library existed to perform the update type operations supported by the API itself.

[nblumhardt]

Thanks for the suggestion! This would make a lot of sense and has been in the back of my mind for a while; we'll look at adding something like connection.Events.IngestBatchAsync(...).

[nblumhardt]

This, #127, and #125 are somewhat related; the searching, streaming, and ingestion APIs all support the same event format, but Seq.Api uses different types to represent them (or doesn't - in this case). We should ideally do all three pieces of work together.