Add surface area of torus algorithm

[Gopesh111]

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Describe your change:

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new JavaScript files are placed inside an existing directory.
• All filenames should use the UpperCamelCase (PascalCase) style. There should be no spaces in filenames.
  Example:User个人资料.js is allowed but userprofile.js,Userprofile.js,user-个人资料.js,user个人资料.js are not
• All new algorithms have a URL in their comments that points to 维基pedia or another similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 18 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.84%. Comparing base (08d8c6b) to head (0121c89).

Files with missing lines	Patch %	Lines
Maths/SurfaceAreaOfTorus.js	0.00%	18 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1870      +/-   ##
==========================================
- Coverage   85.91%   85.84%   -0.08%     
==========================================
  Files         379      380       +1     
  Lines       19778    19796      +18     
  分支     3015     3017       +2     
==========================================
  Hits        16993    16993              
- Misses       2785     2803      +18     

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[Gopesh111]

Closing this PR for now due to missing test coverage on my side.
Thanks for the review and guidelines — will revisit later.