* Move image loading code used by get_image_metadata from templates to imageproc
* resize_image: Compute image resize op beforehand and return metadata to caller
* get_image_metdata: Use a serializable response struct
* imageproc: Add integration tests
* imageproc: Assume webp is lossy
* get_image_metadata: Use webp crate for decoding WebP, image is still not very good at it
* imageproc: Test read_image_dimensions in integration tests
* imageproc: Rename read_image_dimensions() as read_image_metadata()
* imageproc: Fix a regression in hash computation
* imageproc: Don't hardcode hashes in integration tests, pattern match them instead
* imageproc: Style fixes
* imageproc: Fix integration tests on Windows (hopefully)
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