Added 1 new item NetcoreSaas (netcoresaas.com/product), a .NET multi-tenant boilerplate by @AlexandroMtzG, to the SaaS Starters directory (listskit.com/saasstarters) #listskit

Added 1 new item DirectoryFast (directoryfa.st), a NextJS directory SaaS boilerplate by @MajorBaguette, to the Directory Starters directory (listskit.com/directorystarters) and the SaaS Starters directory (listskit.com/saasstarters) #listskit