Add batch hierarchy circular reference checks

[sjohansson]

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Spawned from Fix code scanning alert - A "TODO" or similar was left in source code, possibly indicating incomplete functionality

The creation of batch hierarchies allows any batch to reference any other batch as parent/child In most scenarios, this hierarchy is expected to be a dag, acyclic. The registration of a relationship can check for the introduction of a cyclic or circular reference and warn. This code snippet has not been completed.

Tracking issue for:

• [ ] https://github.com/data-solution-automation-engine/DIRECT/security/code-scanning/43