Add instrumentation and entity relationship support for AWS_REDSHIFT_CLUSTER

[kford-newrelic]

Description

Add core instrumentation support for the AWS_REDSHIFT_CLUSTER service to the Ruby Agent, along with necessary linking data for entity relationships.

Acceptance Criteria

When APM monitored applications are using the AWS_REDSHIFT_CLUSTER service, entity relationships are created.

Design Consideration/Limitations

Assume the data to be emitted for linking will need to rely on ARN-like matching, requiring the AWS account ID to be available in some manner.

Dependencies

Assume this will follow the pattern (agent spec?) established by the Java Agent.

Additional context

N/A

[workato-integration]

https://new-relic.atlassian.net/browse/NR-323115