Lars Wendler <polynomial-c@gmx.de> [Mon, 27 Jan 2025 19:08:55 +0100] rev 16097
Rename appdata to metainfo
See https://www.freedesktop.org/software/appstream/docs/chap-Metadata.html
chapter 2.1.2 "Filesystem locations"
Signed-off-by: Lars Wendler <polynomial-c@gmx.de>