updated io_utils.py

[haripriya9647]

Description

adding inline documentation to the files in utilities folder

Relevant Issue

Issue #269 the issue here

Affected Dependencies

List any dependencies that are required for this change.

How has this been tested?

• Describe the tests that you ran to verify your changes.
• Provide instructions so we can reproduce.
• List any relevant details for your test configuration.

Checklist

• [x] I have followed the Contribution Guidelines and Code of Conduct
• [x] I have commented my code following the NimbleEdge Styleguide
• [x] I have labeled this PR with the relevant Type labels
• [x] My changes are covered by tests

[netlify[bot]]

✅ Deploy Preview for goofy-agnesi-4565cb canceled.

Name	Link
🔨 Latest commit	ad690026b0faa5db9993fae66e83894b1a566384
🔍 Latest deploy log	https://app.netlify.com/sites/goofy-agnesi-4565cb/deploys/62e22f460aa0d20008cfe45d

[divyanshugit]

Please follow it for all of the methods and examples(if needed)

[haripriya9647]

Working on remaining suggested commits @divyanshugit

[divyanshugit]

LGTM!! @ramesht007