feat: Exporter middleware

[spompea-cfa]

Initial version of the Exporter middleware: exports data from a Senzing database and uploads it as a JSON file to an S3 bucket.

Ancillary changes not specific to Exporter that are also included here:

• loglib module
• some additional README changes

[Copilot]

Pull Request Overview

This PR introduces an Exporter middleware that exports data from a Senzing database and uploads it as JSON files to an S3 bucket. The implementation includes proper logging infrastructure and Docker containerization for the new service.

• Adds a new Exporter middleware service with S3 upload capabilities
• Introduces a reusable logging library module for consistent log formatting
• Provides Docker configuration and documentation for running the exporter

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
middleware/exporter.py	Main exporter implementation that connects to Senzing, exports JSON entity reports, and uploads to S3
middleware/loglib.py	Shared logging utility module with standardized formatters and logger management
Dockerfile.exporter	Docker configuration for the exporter service
docker-compose.yaml	Service definition for the exporter with environment configuration
README.md	Updated documentation with exporter usage instructions
.trivyignore.yaml	Security scan exception for the exporter Dockerfile
middleware/sample-data/hemingway.txt	Sample text file for testing purposes

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