Add missing package declaration in StronglyConnectedComponentOptimize…

[hewageuhcu]

…dTest

• 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 69.07%. Comparing base (5246f63) to head (78d5941).
Report is 16 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6006      +/-   ##
============================================
+ Coverage     67.98%   69.07%   +1.09%     
- Complexity     4586     4682      +96     
============================================
  Files           620      624       +4     
  Lines         17116    17166      +50     
  Branches       3305     3311       +6     
============================================
+ Hits          11636    11858     +222     
+ Misses         5035     4855     -180     
- Partials        445      453       +8     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[hewageuhcu]

This is not much correct