Evaluate makePackageBom for possible removal

@prabhu You originally contributed the code for the `makePackageBom` goal. I believe this functionality has since been implemented in `makeAggregateBom`. Can we remove makePackageBom? If not, what specific value does it currently have over makeBom and makeAggregateBom.

If makePackageBom does something the other two goals do not, then how can we simply the plugin to move the functionality into one of the other goals?

Start by comparing the makePackageBom, makeBom, and makeAggregateBom goals referenced in the issue. Trace what each goal currently provides and whether their outputs or use cases differ. Done means deciding whether makePackageBom has distinct value and, if not, defining a justified consolidation or removal plan.

Written by the indexing model from the issue text.