Split common mutter files into subpackage for consumption by soft-forks without creating conflicts

mutter.spec

@@ -95,6 +95,9 @@ Requires: pipewire%{_isa} >= %{pipewire_version}
 Requires: startup-notification
 Requires: dbus
 
+# Need common
+Requires: %{name}-common = %{version}-%{release}
+
 Recommends: mesa-dri-drivers%{?_isa}
 
 Provides: firstboot(windowmanager) = mutter
@@ -104,6 +107,8 @@ Provides: firstboot(windowmanager) = mutter
 Provides: bundled(cogl) = 1.22.0
 Provides: bundled(clutter) = 1.26.0
 
+Conflicts: mutter < 45~beta.1-2
+
 %description
 Mutter is a window and compositing manager that displays and manages
 your desktop via OpenGL. Mutter combines a sophisticated display engine
@@ -116,6 +121,14 @@ this reason, Mutter is very extensible via plugins, which are used both
 to add fancy visual effects and to rework the window management
 behaviors to meet the needs of the environment.
 
+%package common
+Summary: Common files used by %{name} and forks of %{name}
+BuildArch: noarch
+Conflicts: mutter < 45~beta.1-2
+
+%description common
+Common files used by Mutter and soft forks of Mutter
+
 %package devel
 Summary: Development package for %{name}
 Requires: %{name}%{?_isa} = %{version}-%{release}
@@ -156,11 +169,13 @@ the functionality of the installed %{name} package.
 %{_libdir}/mutter-%{mutter_api_version}/
 %{_libexecdir}/mutter-restart-helper
 %{_libexecdir}/mutter-x11-frames
+%{_mandir}/man1/mutter.1*
+
+%files common
 %{_datadir}/GConf/gsettings/mutter-schemas.convert
 %{_datadir}/glib-2.0/schemas/org.gnome.mutter.gschema.xml
 %{_datadir}/glib-2.0/schemas/org.gnome.mutter.wayland.gschema.xml
 %{_datadir}/gnome-control-center/keybindings/50-mutter-*.xml
-%{_mandir}/man1/mutter.1*
 %{_udevrulesdir}/61-mutter.rules
 
 %files devel