Add progress status output for export and import data loader CLI operations

[inv-jishnu]

Description

In this PR, I have added some changes to display progress status of import and export (not a continuous progress for export) data loader operations. This is to show progress (specifically for import) to users and provide a progress status (as messages) on how the process execution is ongoing. This is mostly to replace the log outputs which was removed previously from core.

Related issues and/or PRs

NA

Changes made

I have added a listener implementation to track and update the progress of import process. For export it is more straight forwar as it shows the start and end of the process with the total number of records exported at the end.

Checklist

The following is a best-effort checklist. If any items in this checklist are not applicable to this PR or are dependent on other, unmerged PRs, please still mark the checkboxes after you have read and understood each item.

• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes.
• I have considered whether similar issues could occur in other products, components, or modules if this PR is for bug fixes.
• Any remaining open issues linked to this PR are documented and up-to-date (Jira, GitHub, etc.).
• Tests (unit, integration, etc.) have been added for the changes.
• My changes generate no new warnings.
• Any dependent changes in other PRs have been merged and published.

Additional notes (optional)

NA

Release notes

Add progress status output for export and import data loader CLI operations.