Suggest : suport filesystem as shared library

[Esp9527]

we can use "ghc/fs_pwd.h" "ghc/fs_impl.h" as .h and .cpp at shared library

but can't export filesystem class and function at .so

if that can support, will be easy to use filesystem like std

[gulrak]

Indeed it would be a nice addition to optionally use it as shared library. But this would take some time to work out and test thoroughly on all targets, so I can't promise any quick solution, but I'll at least check the possibilities.

[phprus]

@gulrak, please tell me, do you plan to continue working on the https://github.com/gulrak/filesystem/tree/feature-130-shared-library-support branch?

[gulrak]

I sure still have the plan to continue work for it, but currently I'm short of time, so it might take a bit before I continue to do so. My daytime job has a lot of my focus right now, and besides the small "get my head free" 8-day game jam project I recently did, I can hardly predict the next few weeks. - Sorry for the delay.