Refactor CssName and update build configuration.

Revised `CssName` to support optional override names and adjusted usage across multiple components for consistency. Updated build.gradle.kts to increment version and enable source maps in the browser configuration.

build.gradle.kts

@@ -9,7 +9,7 @@ plugins {
 }
 
 group = "nl.astraeus"
-version = "1.2.0"
+version = "2.0.0-SNAPSHOT"
 
 repositories {
     mavenCentral()
@@ -27,7 +27,11 @@ kotlin {
             target.set("es2015")
         }
         binaries.library()
-        browser {}
+        browser {
+            commonWebpackConfig {
+                sourceMaps = true
+            }
+        }
     }
     jvm {
         withJava()
@@ -153,4 +157,4 @@ tasks.withType<PublishToMavenRepository> {
 
 tasks.withType<PublishToMavenLocal> {
     dependsOn(tasks.withType<Sign>())
-}
+}