Add .i0() term entry for PyTorch Tensor Operations (Issue #7790)

[ylevental]

Description

This PR adds a new term entry for the .i0() method under PyTorch Tensor Operations. The entry includes:

• Introduction explaining the modified Bessel function of the first kind of order zero
• Syntax section with parameter details
• Example demonstrating basic usage with various input values
• Codebyte example showing properties like I₀(0) = 1 and symmetry I₀(-x) = I₀(x)

The entry is located at content/pytorch/concepts/tensor-operations/terms/i0/i0.md.

Issue Solved

Closes #7790

Type of Change

• Adding a new entry

Checklist

• All writings are my own.
• My entry follows the Codecademy Docs style guide.
• My changes generate no new warnings.
• I have performed a self-review of my own writing and code.
• I have checked my entry and corrected any misspellings.
• I have made corresponding changes to the documentation if needed.
• I have confirmed my changes are not being pushed from my forked main branch.
• I have confirmed that I'm pushing from a new branch named after the changes I'm making.
• I have linked any issues that are relevant to this PR in the Issues Solved section.

[mamtawardhani]

Looks good for a second review! 🚀

[dakshdeepHERE]

Did some minor changes and had to remove the last codebyte as our online compiler failed to run the torch lib. Looks good to merge now 🚀

[github-actions]

👋 @ylevental
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