Changeset 16233 for branches/2931_OR-Tools_LP_MIP/HeuristicLab.MathematicalOptimization/3.3/LinearProgramming/IncrementalityValues.cs

#2931:

• added all available parameters OR-Tools's linear_solver to LinearProgrammingAlgorithm
  • added necessary parameter enums
• moved solving logic to Solver
  • created IncrementalSolver, ExternalSolver, ExternalIncrementalSolver
  • added logic for solvers that can be stopped and resumed
• added SupportsStop property to BasicAlgorithm
• added quality per time chart for incremental solvers