Change type of X/Y Resolution from Integer to Double in the schema definition

The Picture addon defines the field X/Y Resolution as Integer.
https://github.com/nuxeo/nuxeo/blob/10.10/nuxeo-features/nuxeo-platform-imaging/nuxeo-platform-imaging-core/src/main/resources/schema/image_metadata.xsd#L10-L11

However Exiftool tools returns a float for them

exiftool /tmp/02826.jpg |grep "0.0096"
X Resolution                    : 0.0096
Y Resolution                    : 0.0096

The type must be changed to xs:double in the schema definition

It would be interesting to know if pixel_xdimension/pixel_ydimension should also use Double