add crud repo server and change a lot of different things

ktor/tests/src/test/kotlin/com/insanusmokrassar/postssystem/ktor/tests/WebsocketsTest.kt

@@ -27,9 +27,7 @@ class WebsocketsTest {
         val server = createKtorServer(host = "127.0.0.1", port = port) {
             install(WebSockets)
             routing {
-                includeWebsocketHandling(suburl, dataFlow) {
-                    standardKtorSerialFormat.encodeToByteArray(Int.serializer(), it)
-                }
+                includeWebsocketHandling(suburl, dataFlow, Int.serializer())
             }
         }.also {
             it.start(false)
@@ -42,10 +40,9 @@ class WebsocketsTest {
         }
         val incomingWebsocketFlow = client.createStandardWebsocketFlow(
             "$serverUrl/$suburl",
-            { false } // always skip reconnection
-        ) {
-            standardKtorSerialFormat.decodeFromByteArray(Int.serializer(), it)
-        }
+            { false }, // always skip reconnection
+            deserializer = Int.serializer()
+        )
 
         var currentlyCheckingData: Int? = null
         incomingWebsocketFlow.onEach {