Gracefully handle Vite virtual files

[hecktarzuli]

Vite supports virtual files like virtual:public?%2Fimages%2Fvisa.svg. This module attempts to load these files even if the default import type is url because of the ? in the virtual filename.

This produces tons of warnings like these:

For the time being it would be nice if this plugin just early-outted if the url starts with virtual: