Reduce the number of redundant SQL statements inserting packages

[ctron]

Navigating through the Graph code, I see the following pattern:

• get_foo -> if Some -> return foo
• ingest parent of foo
• add foo to parent
  • get_foo -> if Some -> return foo
  • insert foo -> return foo

That patterns nests into the parent structures.

Without having a concrete idea, I have the expectation that we could at least eliminate the second get. As for a medium sized SBOM we have ~8000 of those calls, I think it makes sense to improve the performance.

[ctron]

I think that not too bad at this point.