Add <attachRecords/> Setting to indicate that fetched records shouldn't be automatically "attached"

[lukaseder]

I wonder whether there should be a Setting flag to indicate that jOOQ should not automatically "attach" resulting records? While this automatic attachment is convenient for simple use-cases, it's obviously prohibitive when connection and memory-management are important...

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It may be useful to investigate whether attaching of non-TableRecords should be avoided. Beware that contained UDTs should still be attached, though.