Added volume of a torus

[kvadrik]

Added function calculation the volume of a torus according to the formula: V = 2 * pi^2 * R * r^2
where R is the major radius and r is the minor radius of the torus.

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized it.
• All filenames are in PascalCase.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• All new algorithms include a corresponding test class that validates their functionality.
• All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.40%. Comparing base (ba286b2) to head (8b942e2).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #7294      +/-   ##
============================================
- Coverage     79.41%   79.40%   -0.01%     
  Complexity     7051     7051              
============================================
  Files           787      787              
  Lines         23106    23107       +1     
  Branches       4542     4542              
============================================
- Hits          18350    18349       -1     
- Misses         4023     4024       +1     
- Partials        733      734       +1     

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