requested to merge lsegovia/krita:work/amyspark/413970-parse-tiff-exif-gps into master
This commit adds metadata r/w support to the TIFF impex plugin. This includes XMP, IPTC, and Exif.
These were implemented, in the case of XMP and IPTC, by straight calls to the newly refactored (after 12 years!) metadata backend registry; in the case of Exif, as I did not want to :psyduck: 100+ tags manually, I resorted to a second read pass with Exiv2. Do notice that the latter has some limitations because Exiv2 can't see beyond the 4th IFD, and it cannot parse a group name (its readable way of listing IFDs) beyond the 21st. Both were reported upstream.
Build Krita. Open TIFFs with metadata.