YKI(Frontend): Declare side-effectful files

Author: pkoivisto

frontend/packages/yki/package.json

@@ -31,5 +31,11 @@
   },
   "devDependencies": {
     "multer": "^1.4.5-lts.1"
-  }
+  },
+  "sideEffects": [
+    "**/*.scss",
+    "./src/index.tsx",
+    "./src/App.tsx",
+    "./src/redux/store/index.ts"
+  ]
 }