[Feature Request]: add preview thumbnails for exr images

### Checklist

- [x] I am using an up-to-date version.
- [x] I have read the [documentation](https://github.com/TagStudioDev/TagStudio/blob/main/docs/index.md).
- [x] I have searched existing [issues](https://github.com/TagStudioDev/TagStudio/issues).

### Description

no preview for exr images currently

### Solution

add openexr dependency 

### Alternatives

_No response_