refactor(bukkit): 为配置文件读取代码添加默认值

hamster-ball-bukkit/src/main/java/cn/hamster3/mc/plugin/ball/bukkit/api/BallBukkitAPI.java

@@ -40,9 +40,9 @@ public class BallBukkitAPI extends BallAPI {
                         host.isEmpty() ? "127.0.0.1" : host,
                         pluginConfig.getInt("server-info.port", Bukkit.getPort())
                 ),
-                pluginConfig.getString("ball-server.host"),
-                pluginConfig.getInt("ball-server.port"),
-                pluginConfig.getInt("ball-server.nio-thread")
+                pluginConfig.getString("ball-server.host", "ball.hamster3.cn"),
+                pluginConfig.getInt("ball-server.port", 58888),
+                pluginConfig.getInt("ball-server.nio-thread", 10)
         );
         instance = new BallBukkitAPI(config);