feat(common): add optional rounded transform support in cloudinary image loader

[devashishSarmah]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular/blob/main/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• angular.io application / infrastructure changes
• Other... Please describe:

What is the current behavior?

Currently, the cloudinary image loader doesn't support rounded transform

Issue Number: N/A

What is the new behavior?

Added a change which enables the users to add a prop called rounded to the existing ImageLoaderConfig.loaderParams prop.

Does this PR introduce a breaking change?

• Yes
• No

Other information

[JeanMeche]

Could you add a corresponding unit test, thank you.

[devashishSarmah]

Hi, The unit test has been added.

[AndrewKushnir]

@devashishSarmah thanks for the improvement!

[AndrewKushnir]

Presubmit.

[devashishSarmah]

Hi @AndrewKushnir, The linting has failed due to the merge commits "Merge branch 'angular:main' into image-loader-cloudinary-add-rounded-transform". What can be done here?

[JeanMeche]

You while need to rebase your PR, drop the merge commits and squash everything into a single commit. We'd like this change to be a single commit. Thank you.

[devashishSarmah]

Hi @JeanMeche, I have merged all my commits into a single one.

[AndrewKushnir]

This PR was merged into the repository by commit 24c6373.

The changes were merged into the following branches: main

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