Move new scss files

app/webpacker/css/admin/all.scss

@@ -101,6 +101,7 @@
 @import 'side_menu';
 @import 'tables';
 @import 'tag_rules';
+@import 'terms_of_service_files';
 @import 'validation';
 @import 'variables';
 @import 'variant_overrides';

app/webpacker/css/darkswarm/all.scss

@@ -59,6 +59,7 @@
 @import 'shop_tabs';
 @import 'sidebar';
 @import 'signup';
+@import 'split-checkout';
 @import 'stripe-elements';
 @import 'style';
 @import 'tables';