add h2 and save user info to db

src/main/resources/db/schema-h2.sql

@@ -0,0 +1,12 @@
+-- DROP TABLE IF EXISTS T_KAKFA_USER;
+
+CREATE TABLE if not exists T_KAFKA_USER
+(
+    ID IDENTITY NOT NULL COMMENT '主键ID',
+    USERNAME VARCHAR(50) NOT NULL DEFAULT '' COMMENT '姓名',
+    PASSWORD VARCHAR(50) NOT  NULL DEFAULT '' COMMENT '年龄',
+    UPDATE_TIME TIMESTAMP NOT  NULL DEFAULT NOW() COMMENT '更新时间',
+    PRIMARY KEY (ID),
+    UNIQUE (USERNAME)
+);
+