recipe-generator: Update to new template structure with install and live templates

- Replaced individual templates with unified 'install' (desktop, server, hypervisor) and 'live' (live-desktop, live-server) templates

- Added new modifiers: variant_type, hypervisor-type, desktop, initial-setup, virtualization

- Updated generate_recipe.py to handle new modifier structure with additive flags

- Updated recipes_manifest.yaml with new modifier structure

- Added missing fragment files and directories

fragments/shared/packages/virtual-machine-manager/post-scripts.ks

@@ -0,0 +1,56 @@
+# Virt-manager post-installation configuration
+
+%post --nochroot --log=/mnt/sysimage/root/vmm-post-scripts.log # Beginning of %post section
+
+# Create a file to autostart virt-manager
+cat > /mnt/sysimage/etc/xdg/autostart/virt-manager.desktop << EOF
+[Desktop Entry]
+Type=Application
+Name=Virtual Machine Manager
+Exec=virt-manager
+EOF
+
+# Modify the default virt-manager behavior for misc. options
+cat >> /mnt/sysimage/usr/share/glib-2.0/schemas/org.virt-manager.virt-manager.gschema.override<< EOF
+
+[org.virt-manager.virt-manager]
+xmleditor-enabled=true
+manager-window-height=600
+manager-window-width=200
+
+[org.virt-manager.virt-manager.connections]
+uris=['qemu:///system', 'qemu:///session']
+autoconnect=['qemu:///session']
+
+[org.virt-manager.virt-manager.vmlist-fields]
+cpu-usage=false
+
+[org.virt-manager.virt-manager.stats]
+update-interval=3
+enable-disk-poll=true
+enable-memory-poll=true
+enable-net-poll=true
+
+[org.virt-manager.virt-manager.console]
+scaling=2
+resize-guest=1
+autoconnect=false
+
+[org.virt-manager.virt-manager.details]
+show-toolbar=false
+
+[org.virt-manager.virt-manager.new-vm]
+storage-format='raw'
+cpu-default='host-model'
+graphics-type='spice'
+
+[org.virt-manager.virt-manager.confirm]
+forcepoweroff=false
+removedev=false
+unapplied-dev=false
+
+EOF
+
+glib-compile-schemas /mnt/sysimage/usr/share/glib-2.0/schemas/
+
+%end # End of the %post section