Add `ChronicleFeedPullAgent` to replicate facts or log messages into local sink

[itadapter]

Related:

• 867

• 861

[itadapter]

• Add Fact.SrcDataShard - should fact even have it?
• Refactor ChronicleWebClient.getFactsCrossShard to respect shard number
• PullAgent.Source - get back Bixon, not json - more efficient (accept header)

[itadapter]

• Add Sink.MinCheckpoint: DateTime - the service should not take checkpoint less than that, e.g. June 1, 2023
• Add MongoFactSink.AtomsAsString - write atoms as string values, including - or dont bother?

[itadapter]

done