Observation builder

[Gabrielstav]

• Observation builder & tests.

Other updates:

• Foreign keys published by ConditionOccurrence, consumed by Measurement builder methods to link to cancer type (per cdm oncology guidelines).
• Harmonized tumor types and target biomarker files.
• Natural keys owned by domain models, used bu builders to generate UIDs.
• Deterministic sorting of collection data before hydration, processors no longer need to care about sorting.
• Base class checks for NK collisions.
• Not Evaluable tumor assessments emitted from MeasurementBuilder.
• Mapping files updated.
• ClinicalBenefit singleton with week field instead of separate fields on Patient.