DATACMNS-1050 - Encapsulate boundaries in value objects for Range.

We now encapsulate a boundary in Range within a Bound value object. Bound consists of a value and whether the value is inclusive or exclusive. Boundaries without a value are unbounded. We introduced factory methods for Range and Boundary creation using primitives and a builder to build a Range.

Range<Long> range = Range.unbounded();
Range<Integer> range = Range.from(Bound.inclusive(10)).to(Bound.inclusive(20));
Range<Integer> range = Range.of(Bound.inclusive(10), Bound.inclusive(20));

Original pull request: #121.

Author: mp911de