add h2 and save user info to db

src/main/java/com/xuxd/kafka/console/beans/dos/KafkaUserDO.java

@@ -0,0 +1,26 @@
+package com.xuxd.kafka.console.beans.dos;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+/**
+ * kafka-console-ui.
+ *
+ * @author xuxd
+ * @date 2021-09-06 15:09:23
+ **/
+@Data
+@TableName("t_kafka_user")
+public class KafkaUserDO {
+
+    @TableId(type = IdType.AUTO)
+    private Long id;
+
+    private String username;
+
+    private String password;
+
+    private String updateTime;
+}