Refactor package structure and add web components.

Reorganized Kotlin package structure under 'nl.astraeus' and removed 'gradle.properties' file. Updated '.gitignore' to exclude 'gradle.properties'. Added new web functionalities including ID generation, websocket and HTTP request handling to support dynamic web content delivery. Adjusted server configuration and modified build version.

src/jvmMain/kotlin/nl/astraeus/tmpl/web/WebsockerHandler.kt

@@ -0,0 +1,55 @@
+package nl.astraeus.tmpl.web
+
+import io.undertow.Handlers.websocket
+import io.undertow.server.HttpHandler
+import io.undertow.server.HttpServerExchange
+import io.undertow.websockets.WebSocketConnectionCallback
+import io.undertow.websockets.core.AbstractReceiveListener
+import io.undertow.websockets.core.BufferedBinaryMessage
+import io.undertow.websockets.core.BufferedTextMessage
+import io.undertow.websockets.core.WebSocketChannel
+import io.undertow.websockets.extensions.PerMessageDeflateHandshake
+import io.undertow.websockets.spi.WebSocketHttpExchange
+import kotlin.also
+
+class WebsocketHandler : AbstractReceiveListener(), WebSocketConnectionCallback {
+  // var user: String? = null
+
+  override fun onConnect(exchange: WebSocketHttpExchange, channel: WebSocketChannel) {
+    channel.receiveSetter.set(this)
+    channel.resumeReceives()
+  }
+
+  override fun onFullTextMessage(channel: WebSocketChannel, message: BufferedTextMessage) {
+    val data = message.data
+
+    TODO("handle text message")
+  }
+
+  override fun onFullBinaryMessage(channel: WebSocketChannel, message: BufferedBinaryMessage?) {
+    message?.data?.also { data ->
+      var length = 0
+      for (buffer in data.resource) {
+        length += buffer.remaining()
+      }
+      val bytes = ByteArray(length)
+      var offset = 0
+      for (buffer in data.resource) {
+        buffer.get(bytes, offset, buffer.remaining())
+        offset += buffer.remaining()
+      }
+
+      TODO("handle binary message")
+    }
+  }
+}
+
+object WebsocketConnectHandler : HttpHandler {
+
+  override fun handleRequest(exchange: HttpServerExchange) {
+    val handshakeHandler = websocket(WebsocketHandler())
+    handshakeHandler.addExtension(PerMessageDeflateHandshake())
+    handshakeHandler.handleRequest(exchange)
+  }
+
+}