feat: Add Topological Sorting using DFS

[gowtham1412-p]

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

[codecov-commenter]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 78.55%. Comparing base (1c6026e) to head (ba5139d). :warning: Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #7120      +/-   ##
============================================
+ Coverage     78.50%   78.55%   +0.05%     
- Complexity     6752     6772      +20     
============================================
  Files           759      760       +1     
  Lines         22402    22446      +44     
  Branches       4400     4413      +13     
============================================
+ Hits          17587    17633      +46     
+ Misses         4109     4108       -1     
+ Partials        706      705       -1     

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[github-actions[bot]]

This pull request has been automatically closed because its workflows or checks failed and it has been inactive for more than 14 days. Please fix the workflows and reopen if you'd like to continue. Merging from main/master alone does not count as activity.