Update the project to a modern state

src/jsMain/kotlin/client.kt

@@ -57,8 +57,8 @@ suspend fun main() {
         LaunchedEffect(Unit){
             dataFlow.onEach { event ->
                 println("Received $event")
-                if (event is CounterDataEvent) {
-                    count = event.value
+                when (event) {
+                    is CounterDataEvent -> count = event.value
                 }
             }.launchIn(this)
         }

src/jvmMain/kotlin/server.kt

@@ -5,7 +5,6 @@ import io.ktor.server.application.call
 import io.ktor.server.application.install
 import io.ktor.server.engine.embeddedServer
 import io.ktor.server.html.respondHtml
-import io.ktor.server.http.content.resources
 import io.ktor.server.http.content.staticResources
 import io.ktor.server.netty.Netty
 import io.ktor.server.routing.get
@@ -19,7 +18,6 @@ import io.rsocket.kotlin.payload.buildPayload
 import io.rsocket.kotlin.payload.data
 import kotlinx.coroutines.flow.*
 import kotlinx.html.*
-import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json