[TA51]Add Pour Part Specs into a unit of project

1. Added NamedQuery to Additive and Mixture entities.
2. Added createPouringPartSpec(Long unitProjectId,
List<CreatePouringPartSpecRequest> request) method to ContractBean
class.
3. Added CreatePouringPartSpecRequest and AdditiveInfor classes.
4. Added cascade persist on pouringPart in PouringPartSpec class for
cascade persist.
5. Added UnitProjectResources class and added it into
ContractApplication.