[fix] get file extension to check if it's allowed or not

[Alex01d]

Without extension files are always denied to upload.
Related to #26

[Baboo7]

@Alex01d from which url did you try to import the media? Files may need to be checked according to their mime type if there is no extension provided in the url

[Alex01d]

My URLs are like http://localhost/images.ctfassets.net/swpmepf0mrp6/Q902ryYwn8EBM71n9f3cF/0aa70a426a0730b99e1a024df99cd530/lomluda1972_cover.jpg (local copy) or https://images.ctfassets.net/swpmepf0mrp6/Q902ryYwn8EBM71n9f3cF/0aa70a426a0730b99e1a024df99cd530/lomluda1972_cover.jpg

But the problem is in isValidFileUrl: https://github.com/Baboo7/strapi-plugin-import-export-entries/blob/master/server/services/import/utils/file.js#L178 - here you get just { name } with no extension property, but then use extension in isExtensionAllowed(fileData.extension, allowedFileTypes) (line 181). It's always false.

[Baboo7]

Good catch

[Baboo7]

New version 1.10.1 published