"Debugging section"

Somewhere, to decide the place.
The idea is to document how to debug the libraries in conan packages.
With visual studio, gdb and clion, it is enough to `conan install . --build DEP_YOU_WANT_TO_DEBUG` to let the debugger find the sources.

We should add the steps (even with screenshots) with clion/visual/gdb.

There are other ideas we should mention like the proposed by @noverby at https://github.com/conan-io/conan/issues/4736 as alternatives if you want to be able to debug directly the binaries without building again from sources.