Add file util class for data loader CLI

[inv-jishnu]

Description

Adding a file util class for data loader CLI to validate file exists

Related issues and/or PRs

Please review this PR once the below PR is merged and the changes from master branch is updated in this branch

• Add import log classes and utils #2463

Changes made

Add a util class to check the existence of a file when a file path is provided.

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.
• 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)

This is the first PR for data loader CLI

Release notes

NA

[inv-jishnu]

Closing this PR as I have created a new PR #2616 as there were too many conflicts after code changes from other PRs.