refactor: 规范代码结构

backend/src/main/java/io/dataease/dto/datasource/MysqlConfigration.java

-package io.dataease.dto.datasource;
-
-import lombok.Getter;
-import lombok.Setter;
-
-@Getter
-@Setter
-public class MysqlConfigration extends JdbcConfiguration {
-
-    private String driver = "com.mysql.cj.jdbc.Driver";
-
-    public String getJdbc() {
-        // 连接参数先写死，后边要把编码、时区等参数放到数据源的设置中
-        return "jdbc:mysql://HOSTNAME:PORT/DATABASE?characterEncoding=UTF-8&connectTimeout=5000&useSSL=false"
-                .replace("HOSTNAME", getHost().trim())
-                .replace("PORT", getPort().toString().trim())
-                .replace("DATABASE", getDataBase().trim());
-    }
-}
\ No newline at end of file