Utils `gatherSources` fails if path has spaces

The `gatherSources` script relies on `url.resolve` to resolve absolute paths. This changes any spaces in a local filesystem path to `%20`, which then fails to find the file.

https://github.com/Crypto-Punkers/resolver-engine/blob/aa15ba13b55dd470712a68b6ea5f10340da713b4/packages/imports/src/utils.ts#L108