Can't have a sub-folder named "Images" in Project Files

Not sure whether this is even worth raising a bug for - but it took me several hours to track down, so I thought I'd document here just in case anyone else sees this error when trying to build an xcode project:

ERROR: Failed to load texture: Error: fetch 'app://localhost/images/shared-0-sheet0.webp' response returned 404

Turns out that if you have just a folder named "Images" (with a capital "I") that contains an image and a regular sprite in a project, the sprite's texture won't load with the above error.

It's probably because if you create a folder named 'images' in the root 'Files' folder, it ends up using the same name as the Construct built-in 'images' folder used in exported projects. Construct should prevent you using these names, but that wasn't implemented. I've added a check for that to prevent it happening again - as we're close to a stable release that check is in for the next release cycle (first beta after the next stable release).

Thanks - just a note - it seems to be the capitalization of the "I" that matters - if it's lowercase, the error isn't shown.