Add DeepCopy capabilities for DynamicObj

[kMutagene]

Update: renamed this issue so we can focus on the combine rework in another one: #43

Both should do the same (or there needs to be a _.combine instance method), and i think they should be adapted to not mutate any of the 2 objects but rather return a new object.

[kMutagene]

Additionally, CopyDynamicPropertiesTo should not fail if overwrite is set to false. The expected behavior is that on overWrite = false, new properties are added to the target, but existing ones are kept as-is.

[kMutagene]

for reference, this blocks nfdi4plants/ARCtrl#478

[kMutagene]

This has been a gigantic rabbit hole, and the solution is not very satisfiying, but we at least have some Deep copy capabilities in #42 . It is i think impossible to return a completely copied result though, as we do not have enough knowledge about boxed dynamic props to deep copy any type/class (and there might be ones that cannot be deep copied anyways). I have settled on a "good enough" approach for now.

[HLWeil]

So typed objects without a "Copy" method will result in a "DynamicObject" with the same fields?

[kMutagene]

So typed objects without a "Copy" method will result in a "DynamicObject" with the same fields?

Yes but Note that this is a draft PR. I think there is a point to be made that static properties should be copied as well. That way, we can "recover" the derived class if needed.

I think there is no other way for this method. This is the 'try maximum nested deep copy' method. I think as long as this is well documented everything is fine.

[HLWeil]

Oh, so currently only the dynamic properties are copied? Shouldn't it be a simple addition to copy the static fields too? E.g. decided by an optional boolean parameter?

Yes, there is no secure way to deep copy classes, even via Reflection. You can never be sure how the constructor is meant to be used.

[kMutagene]

Shouldn't it be a simple addition

yes, but alas, this is a draft PR i'll let you know when it is ready to be reviewed ;)

[kMutagene]

Note that this will not be closed via #42, combine still needs work afterwards

[kMutagene]

Closed via #42