fix: use webpack for dev-server to keep consistent css-module classnames

There's an inconsistency between webpack and next turbo's `localIdentName`

This also improves the hot-loading

fixes #440

README.md

@@ -222,7 +222,7 @@ with a specified value. As an example, if you want to always show the subline in
 the following rule:
 
 ```css
-[class^="subline__Logo"] {
+[class^="Logo_subline"] {
   display: block;
   opacity: 1;
 }