add l2_loss function to tensorflow frontend

[0StevenH0]

PR Description

• Added l2_loss function at ivy/experimental/nn.py
• Added l2_loss function at tensorflow frontend
• Added l2_loss test

Related

Close #23073

Checklist

• Did you add a function?
• Did you add the tests?
• Did you follow the steps we provided?

Socials:

[github-actions]

Thanks for contributing to Ivy! 😊👏
Here are some of the important points from our Contributing Guidelines 📝:
1. Feel free to ignore the run_tests (1), run_tests (2), … jobs, and only look at the display_test_results job. 👀 It contains the following two sections:
- Combined Test Results: This shows the results of all the ivy tests that ran on the PR. ✔️
- New Failures Introduced: This lists the tests that are passing on main, but fail on the PR Fork. Please try to make sure that there are no such tests. 💪
2. The lint / Check formatting / check-formatting tests check for the formatting of your code. 📜 If it fails, please check the exact error message in the logs and fix the same. ⚠️🔧
3. Finally, the test-docstrings / run-docstring-tests check for the changes made in docstrings of the functions. This may be skipped, as well. 📚
Happy coding! 🎉👨‍💻

[ivy-leaves]

If you are working on an open task, please edit the PR description to link to the issue you've created.

For more information, please check ToDo List Issues Guide.

Thank you 🤗

[Ishticode]

Hi @0StevenH0
Thanks for the PR. :)
This PR has been marked draft for 6 months with no activity.
Is this still being worked upon?