V3 Improvements + DynamicCombo exposed in public API

[Kosinkadink]

List of changes:

• Added missing raw_link and extra_dict params to all Input classes
• Official AnyType (*) support in validation code; the ne trick is no longer needed
• Properly validate COMBOs defined in the 'new' (9-month old) way; some commented out code is prepared to convert all COMBOs to this format
• Make old-style COMBOs work with new COMBOs when using output-as-combos
• Expose DynamicCombo input in public API; now officially supported
• Convert dynamic type input parsing to be done via table lookup instead of object-oriented to make it easily compatible with upcoming process isolation feature; this also simplifies V3's INPUT_TYPES class method to be cachable properly and not accept funky args
• Prepare backend support for nested Autogrow input type (wont be exposed publicly until frontend version is new enough in stable version of ComfyUI)
• Remove references to scrapped 'resources' feature