add gpio

hc

2023-12-04 f33f61bdb7ca6d5ebe7a78f9d8694b91360279ac

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# From http://ftp.gnome.org/pub/GNOME/sources/glibmm/2.54/glibmm-2.54.1.sha256sum
sha256    7cc28c732b04d70ed34f0c923543129083cfb90580ea4a2b4be5b38802bf6a4a glibmm-2.54.1.tar.xz