[util] move bounds to geometry::util

[barendgehrels]

This is a follow up on numeric_cast - now for bounds - which is different and simpler because it was already a structure.
It also adds unit tests for it.
So bounds for Boost.Rational was stil necessary.

It also adds CMakeLists.txt for the folders which tests which were affected

[barendgehrels]

This was placed here in last commit, but it is more consistent with other approach if it is all in rational.hpp (it was there before as well)

[awulkiew]

Thanks, I think util is a better place for this. We could also consider math.

With that said. What do you think about removing it after rewriting or deprecating algorithms using bounds? It's because the library supports any coordinate type even big numerical types with dynamic size that have no bounds, e.g. Boost.Mutiprecision. AFAIR in the past we made a decision to not use assign_inverse in the library. This utliity was left for backward compatibility and if it was used I'd consider this as a bug. What do you think?

Btw, C++14 has this: https://en.cppreference.com/w/cpp/language/attributes/deprecated

[barendgehrels]

Thanks, I think util is a better place for this. We could also consider math.

With that said. What do you think about removing it after rewriting or deprecating algorithms using bounds? It's because the library supports any coordinate type even big numerical types with dynamic size that have no bounds, e.g. Boost.Mutiprecision. AFAIR in the past we made a decision to not use assign_inverse in the library. This utliity was left for backward compatibility and if it was used I'd consider this as a bug. What do you think?

Btw, C++14 has this: https://en.cppreference.com/w/cpp/language/attributes/deprecated

Didn't answer this yet. But yes, it makes sense. We use it in some places, but not often. And yes, assign_inverse we can deprecate, I forgot it, but I guess it was mainly for spherical/geographic

[barendgehrels]

There was one comment but I don't think it will change the PR.
Can it be approved? @awulkiew @vissarion

[awulkiew]

lgtm thanks.

[vissarion]

Looks good to me, thanks!