Feature: span events #39
Description
Is your feature request related to a problem? Please describe.
Add a span event for snapshots. As it is possible to have more than 1 snapshot within the scope of a span we should use events rather than attributes. This provides a scope to set the snapshot id, context id and tracepoint ids as attributes within the events. The events can then also set the name as the snapshot location, and provide scoped time.
Describe the solution you'd like
Call add_event when a snapshot is collected.