solve_triangular

[Tufty62]

Hi, this is my pull request for issue #7479 (adding linear algebra operations to Pytorch frontend). I added the solve_triangular function. It'd be great if you could take a look!

Thank you!

[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:
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[ivy-leaves]

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Thank you 🤗

[ZoeCD]

Hello!
This function has already been taken and is being worked on by another contributor. I'm afraid I'll have to close this pull request. I recommend checking the available functions and creating an issue right away before someone else takes it.
If you have any questions, please let me know!