Feature/adding the travelling salesman problem

[purnimasharma06]

• 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 code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 70 lines in your changes missing coverage. Please review.

Project coverage is 52.73%. Comparing base (be8df21) to head (0f760bb).

Files with missing lines	Patch %	Lines
...ms/greedyalgorithms/TravellingSalesmanProblem.java	0.00%	55 Missing ⚠️
.../java/com/thealgorithms/searches/BinarySearch.java	0.00%	15 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5565      +/-   ##
============================================
- Coverage     52.95%   52.73%   -0.22%     
- Complexity     3309     3310       +1     
============================================
  Files           529      530       +1     
  Lines         15343    15408      +65     
  Branches       2925     2937      +12     
============================================
+ Hits           8125     8126       +1     
- Misses         6882     6947      +65     
+ Partials        336      335       -1     

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