feat(require): adds WithFS option

[dwisiswant0]

Adds support for using embedded filesystems with the require package by introducing a new WithFS option. This allows modules to be loaded from embedded filesystems before falling back to the host filesystem.

Changes

• Added new WithFS option to configure one or more embedded filesystems.
• Modified DefaultSourceLoader to check embedded filesystems before falling back to host filesystem.
• Made DefaultSourceLoader a receiver method to access Registry's filesystems.

Use Cases

• WithFS v. WithGlobalFolders
  • For bundling modules with the app v. runtime configuration of module search paths
  • Embedding required modules v. global module installations
  • Providing read-only module access v. user-specific module directories
  • Shipping standalone executables v. custom module repositories

[dop251]

Thanks for submitting. The current idea is that Registry should not know anything about filesystem, all operations should be abstracted through SourceLoader and PathResolver. So ideally you should be able implement these without touching the Registry itself.