image_base and image_size of LoadedImage is private

[tomoyat1]

As far as I can tell, the image-base and image_size fields of LoadedImage are private, just like device_handle in #138.
I'd like to read these addresses. Would adding a getter for these fields be an option?

[GabrielMajeri]

Yes, of course, a PR would be welcome (see also CONTRIBUTING.md)!

Since these fields are often used together, it might make sense to make a single getter returning both of them.

[tomoyat1]

Cool, I'll look into creating a PR!