fix(core): RouterVerticle Router 从 static final 改为实例字段

Router 声明为 static final 会在类加载时提前创建，
与 Vert.x 实例生命周期不匹配，改为在 start() 中初始化为实例字段。

core/src/main/java/cn/qaiu/vx/core/verticle/RouterVerticle.java

@@ -23,12 +23,11 @@ public class RouterVerticle extends AbstractVerticle {
     private static final Logger LOGGER = LoggerFactory.getLogger(RouterVerticle.class);
 
     private static final int port = SharedDataUtil.getValueForServerConfig("port");
-    private static final Router router = new RouterHandlerFactory(
-            SharedDataUtil.getJsonStringForServerConfig("contextPath")).createRouter();
 
     private static final JsonObject globalConfig = SharedDataUtil.getJsonConfig("globalConfig");
 
     private HttpServer server;
+    private Router router;
 
     static {
         LOGGER.info(JacksonConfig.class.getSimpleName() + " >> ");
@@ -61,6 +60,8 @@ public class RouterVerticle extends AbstractVerticle {
                .setReuseAddress(true)                     // 允许地址重用
                .setReusePort(true);                       // 允许端口重用
         
+        router = new RouterHandlerFactory(
+                SharedDataUtil.getJsonStringForServerConfig("contextPath")).createRouter();
         server = vertx.createHttpServer(options);
 
         server.requestHandler(router).webSocketHandler(s->{}).listen()