systemd/gnome-settings-daemon-mobile: split systemd

The provides is needed that g-s-d-systemd doesnt get installed due to
the install_if to g-s-d.

Part-of: https://gitlab.postmarketos.org/postmarketos/pmaports/-/merge_requests/6361

extra-repos/systemd/gnome-settings-daemon-mobile/APKBUILD

@@ -49,7 +49,7 @@ makedepends="
 # 	py3-gobject3
 # 	umockdev-dev
 # 	"
-subpackages="$pkgname-dev $pkgname-lang"
+subpackages="$pkgname-dev $pkgname-lang $pkgname-systemd"
 _commit=48.mobile.0
 _gvc_commit="91f3f41490666a526ed78af744507d7ee1134323"
 source="gnome-settings-daemon-mobile-$_commit.tar.gz::https://gitlab.gnome.org/verdre/gnome-settings-daemon-mobile/-/archive/$_commit/gnome-settings-daemon-mobile-$_commit.tar.gz
@@ -73,6 +73,11 @@ dev() {
 	default_dev
 }
 
+systemd() {
+	provides="gnome-settings-daemon-systemd=$pkgver-r$pkgrel"
+	default_systemd
+}
+
 check() {
 	meson test --no-rebuild --print-errorlogs -C output
 }