Add EventStreamAuditor class

[MV10]

Add a class used to audit an object's domain event history.

Instance should not be tied to a specific ID, just new() it and use it.

Search domain event history for a given ID:

• read all events or just specific events
• find first event
• find last event
• count events

For all search methods:

• optional event state predicate
• optional timestamp range
• optional ETag range
• option to produce a snapshot for each match (requires replay, probably expensive)

Provide variation on search methods to return a list of matching object IDs (without snapshot replay, too expensive).

Provide domain event replay methods to reproduce an ID's state for a point in time:

• replay through timestamp (inclusive)
• replay to ETag (inclusive)