add sass support

Change-Id: I90b27b1c574091a12a669b23b97a7730aad6c856
diff --git a/client/package.json b/client/package.json
index 2cc5732..26e650e 100644
--- a/client/package.json
+++ b/client/package.json
@@ -23,6 +23,8 @@
     "babel-loader": "^8.2.2",
     "css-loader": "^5.2.0",
     "html-webpack-plugin": "^5.3.1",
+    "sass": "^1.32.8",
+    "sass-loader": "^11.0.1",
     "style-loader": "^2.0.0",
     "webpack": "^5.31.0",
     "webpack-cli": "^4.6.0"