ST6RI-731 Model-level evaluation of the list range construction operator

[seidewitz]

This PR adds two additional model-level evaluable function implementations, under org.omg.sysml.expressions.functions.

1. ListRangeFunction implements the range construction operator '..'. An expression of the form e1...e2, in which e1 and e2 evaluate to integers, results in an ordered sequence of a range of sequential integers from the value of e1 to the value of e2, inclusive. For example, 1..3 evaluates to the sequence (1, 2, 3). If the value of e1 is greater than the value of e2, then the result is the empty sequence.
2. ExcludesFunction implements the SequenceFunctions::excludes function. This function tests whether a value is excluded from a sequence. For example, excludes(1..3, 2) is false, while excludes(1..3, 0) is true. It is the inverse of the includes function, which was already implemented.

It also adds tests to org.omg.sysml.interactive.tests.ModelLevelEvaluationTest for the above new function implementations, as well as adding some additional tests for other sequence-related functions previously implemented.

[himi]

It seems to work. I'll upload an example with my review later.

[himi]

Here is the visualized result:

[seidewitz]

Cool!