Add standalone login shell for diya-session-manager backend

meson.build

@@ -48,18 +48,38 @@ foreach proto : wl_protocols
       command: [ wayland_scanner, 'public-code', '@INPUT@', '@OUTPUT@' ] )
 endforeach
 
-src = [
-    'src/base.c',
+gnome=import('gnome')
+
+base = [
+    'src/base.c'
+]
+
+dm_src = [
+    base,
     'src/launcher.c',
     'src/background.c',
-    'src/wayland.c',
     'src/shell.c',
     'src/foreign.c',
     'src/session.c',
-    'src/main.c',
+    'src/wayland.c',
+    'src/dm.c',
     wayland_targets]
 
 executable(
     'diya-shell',
-    src,
+    dm_src,
+    dependencies: [gtk, gtk_layer_shell, wayland_client])
+
+login_src = [
+    base,
+    'src/login-shell.c',
+    'src/login.c'
+]
+
+login_resource = gnome.compile_resources('resources','resources/login-shell/gresource.xml')
+
+executable(
+    'diya-login-shell',
+    login_src,
+    login_resource,
     dependencies: [gtk, gtk_layer_shell, wayland_client])