Get Atum Context, by getting existing partitioning from DB - retrieve Measures and AdditionalData for a given partitioning #120

[TebaleloS]

Partitioning DB-Functions Calls

• Added class to call partitioning measures function
• Added class to call partitioning additional data DB function
• Defined two methods getPartitioningMeasures and getPartitioningAdditionalData and implemented them.
• Defined and implemented a method in the service returnAtumContext to package the above two methods including createPartitioningIfNotExists method in order to return the desired atum context.
• Added few test-cases for the newly added code.
• Included some test cases for createOrUpdateAdditionalData method as well.

closes #120

[TebaleloS]

Addressed all the comment. No integration testing was done in this PR, only the mocks were performed.

[github-actions[bot]]

JaCoCo server module code coverage report - scala 2.13.11

Overall Project	76.61% -9.59%	:green_apple:
Files changed	85.1%	:green_apple:

File	Coverage
PartitioningRepositoryImpl.scala	100%	:green_apple:
PartitioningControllerImpl.scala	100%	:green_apple:
PartitioningServiceImpl.scala	100%	:green_apple:
GetPartitioningMeasures.scala	71.18% -35.37%	:green_apple:
GetPartitioningAdditionalData.scala	70.56% -35.93%	:green_apple: