feat(Functions): nested js functions

Merge branch 'feat/cnstr'

fix(Args): better handle const& to STL types

fix(Deps): update deps

fix(Inlcude): move a lot of misplaced includes

missing include

fix(Singleton): remove potential issue on windows

fix(Readme): finish documentation

fix(CMake): improve add_genepi_library macro

fix(NAPI): wrong include path