mutter: Move gsettings to a separate package

Move the mutter gsettings to their own package. Some other compositors
(specifically, phoc) want to use the mutter provided gsettings to remain
compatible. This allows those recipes to pick up the runtime settings
without having to pull in all of mutter

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-gnome/recipes-gnome/mutter/mutter_3.34.6.bb

@@ -73,7 +73,9 @@ do_install:append() {
     done
 }
 
-PACKAGES =+ "${PN}-tests"
+GSETTINGS_PACKAGE = "${PN}-gsettings"
+
+PACKAGES =+ "${PN}-tests ${PN}-gsettings"
 
 FILES:${PN} += " \
     ${datadir}/gnome-control-center \
@@ -93,5 +95,5 @@ FILES:${PN}-dev += " \
     ${libdir}/${MUTTER_API_NAME}/lib*.so \
 "
 
-RDEPENDS:${PN} += "zenity"
+RDEPENDS:${PN} += "zenity ${PN}-gsettings"