added Dijkstra Algorithm

[Amit-Verma5262]

• 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

All modified and coverable lines are covered by tests ✅

Project coverage is 72.99%. Comparing base (fd14016) to head (76ca088).
Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6061      +/-   ##
============================================
+ Coverage     72.97%   72.99%   +0.02%     
+ Complexity     5029     5028       -1     
============================================
  Files           655      656       +1     
  Lines         17588    17610      +22     
  Branches       3387     3391       +4     
============================================
+ Hits          12834    12855      +21     
  Misses         4262     4262              
- Partials        492      493       +1     

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[siriak]

It's already implemented here

Java/src/main/java/com/thealgorithms/datastructures/graphs/DijkstraAlgorithm.java

Line 8 in 94fb92e

public class DijkstraAlgorithm {