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This commit is directed to external functionality of the split() function.
1. getAppliedConstraints renamed to getConstraintIndices
This is just for clarity being a general function
2. SwapInvolvedGeometry functionality moved to Constraint class
Why?
i. Because it is a specific operation on a constraint, it must not be
a public function, as it does not define interface of the Sketch.
ii. It could be a lambda or a private utility function, but them it would not be reusable.
iii. It could be part of a helper class, but then, it is would be less reusable.
3. renaming of the flag passed to transferConstraints function
841c328eb3