Exif support

One of the things that I’m interested in adding to my site is information on photos… I figure that if I wanted to be able to include EXIF information in a table format, it would be easiest if I could access this within the tera engine. Probably something like this rust exif library would work as a way of reading it via external dependencies, and from there it would just need to be parsed into an object. Could make for nice functionality, and I don’t think it would be too heavy weight.

Any thoughts on adding this? I could probably take a stab at an implementation, though I’ve never written Rust before.

It could be added to the get_image_metadata fn but I don’t know a good interface for it. Maybe a separate function?