stream light theme

add variables file to create stream light theme

index.css

@@ -0,0 +1,9 @@
+/* Imports */
+@import "../light/globals.css";
+@import "../light/app/index.css";
+@import "../light/common/index.css";
+@import "../light/designer/index.css";
+@import "../light/palette/index.css";
+
+@import "./fonts.css";
+@import "./variables.css";