Add exporter default port to Prometheus default port allocations

[zadjadr]

Issue Description:

To ensure that our custom exporter is easily discoverable and avoids port conflicts, we need to add its default port to the Prometheus default port allocations. This will help standardize the port usage and improve the integration with Prometheus.

Tasks:

• Determine default port: Decide on a default port for the custom exporter that does not conflict with existing allocations.
• Update documentation: Add the default port allocation for the exporter to the Prometheus default port allocations documentation.
• Submit pull request: Submit a pull request to the Prometheus repository with the updated port allocation documentation.
• Review and merge: Work with the Prometheus maintainers to review and merge the pull request.

Additional Notes:

• Ensure that the chosen port is not already allocated by checking the Prometheus default port allocations documentation.