Caliper log store

Integrates with Learning Record Storage using the IMS Caliper 1.0 specification. Certified with IMS Caliper 1.0 for the AssessmentEvent, OutcomeEvent and SessionEvent metric profiles.
The Caliper Logstore component uses the Moodle Logging interface to
capture user events and emit them to a Caliper event store. The Caliper Framework
is a specification from IMS Global which provides a data representation
of learning activities and an API for transmitting these to an event
store for later analysis. Metric profiles are used to describe different
types of learning activity, allowing representations to be matched
against the nature of the activity. Events may be sent immediately to
the event store, or captured for sending later in batches.