WIP (DAVIS to DVS)

[valvals]

It works.
But it is difficult to split plotly_maker.h (.cpp) and array_core.h. (Linking problems. You can try it.) So, for now they use the same dvs namespace.
Working on it.

[AntonMrt]

Look at davis-to-dvs-anton branch.
I have separated public functions "show" to new public namespace "dv". While other functions located at "dvs"
Now all is working, one hdr also works.

[ValeryStk]

How to split it without extra namespaces? Just namespace and public dvs namespace.

[ValeryStk]

Lets discuss it later...

[AntonMrt]

The name can be referred to from the scopes in the other translation units. Variables and functions with external linkage also have language linkage, which makes it possible to link translation units written in different programming languages.

Any of the following names declared at namespace scope have external linkage, unless they are declared in an unnamed namespace or their declarations are attached to a named module and are not exported(since C++20):
https://en.cppreference.com/w/cpp/language/namespace#Unnamed_namespaces
https://en.cppreference.com/w/cpp/language/storage_duration

[AntonMrt]

https://qna.habr.com/q/1099472

[valvals]

Ok. Let's merge your solution to main branch.