Update c++ interop reference page on lifetime handling interoperability

[Emmankoko]

calling C++ constructors in D are now possible and so must be updated in documentation
@dkorpel

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[Emmankoko]

Okay so I have finally been able to get this PR pass with the CI.
I'm sharing the preview of my changes here from CyberShadow.
After you have a look, we can discuss some of your changes you might suggest.
At the lifetime handling header

https://dtest.dlang.io/artifact/website-a787afecc4e6f5a767e58446ec396334c940e628-1441f51d92dcf19ade5fe29608bbed4d/web/spec/cpp_interface.html

@dkorpel

[ntrel]

Thanks for working on this. Just to bear in mind, please try to avoid using 'you' in the spec.

[ntrel]

Suggested change

	$(P Note that you cannot call C++ Copy constructor using D classes since classes in D are reference types.
	you need value semantics to be able to copy so you need to call them using D struct.)
	$(P Note that the C++ Copy constructor cannot be called using D classes since classes in D are reference types.
	Value semantics are needed to be able to copy, so use a D struct.)

[Emmankoko]

I think that's better. Thanks for the correction!

[ntrel]

Suggested change

	$(P Notice you don't need to call destroy on a struct object to invoke the destructor
	since it does stack allocation and its lifetimes ends after leaving the stack.)
	$(P Notice there is no need to call destroy on a struct object to invoke the destructor
	since it does stack allocation (by default) and its lifetime ends with its declaration scope.)

[Emmankoko]

Just force pushed the changes! Thanks again for the suggestions.

[ntrel]

Thanks!

[dkorpel]

Thanks for writing this!
I don't use C++ so I can't verify the info deeply, perhaps @Geod24 can take a quick look?

[Emmankoko]

Thanks for writing this!
I don't use C++ so I can't verify the info deeply, perhaps @Geod24 can take a quick look?

Okay let me ping him

[Geod24]

CC @TurkeyMan