[NR-375022] Add entity definition for AWS Unified Firehose - Logging Integrations

[ahegdeNR]

Relevant information

This PR is used to identify AWS unified firehose (AWS log forwarder) as an entity in NR. Documentation to this service is here (select All other AWS services in the dropdown)

Checklist

• I've read the guidelines and understand the acceptance criteria.
• The value of the attribute marked as identifier will be unique and valid.
• I've confirmed that my entity type wasn't already defined. If it is I'm providing an explanation above.

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