Extend the TSP implementation to work on any graph

[Dniskk]

Summary

• Added support for non-complete graphs in TSP implementation (Possible error at TSP Quadratic Program calculation #628)

Details and comments

• The TSP implementation now handles non-complete graphs correctly by:
  • Only summing over existing edges
  • Adding constraints to prevent using non-existent edges
  • Adding tests for non-complete graph scenarios

[CLAassistant]

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[coveralls]

Pull Request Test Coverage Report for Build 11910572361

Details

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.008%) to 92.865%

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Totals
Change from base Build 11829472558:	0.008%
Covered Lines:	4451
Relevant Lines:	4793

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💛 - Coveralls

[TolisChal]

Thanks @Dniskk! All looks good to me.