database name supports regular expressions or multiple databases？

### Search before asking

- [X] I had searched in the [issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and found no similar issues.

### Description

In Flink cdc connectors，it supports regex to match multi-tables，for example：
```
CREATE TABLE products
(
db_name STRING METADATA FROM 'database_name' VIRTUAL,
table_name STRING METADATA FROM 'table_name' VIRTUAL,
operation_ts TIMESTAMP_LTZ(3) METADATA FROM 'op_ts' VIRTUAL,
operation STRING METADATA FROM 'row_kind' VIRTUAL,
order_id INT,
order_date TIMESTAMP(0),
customer_name STRING,
price DECIMAL(10, 5),
product_id INT,
order_status BOOLEAN,
PRIMARY KEY (order_id) NOT ENFORCED
) WITH (
'connector' = 'mysql-cdc',
'hostname' = 'localhost',
'port' = '3306',
'username' = 'root',
'password' = '123456',
'database-name' = '(^(test).*|^(tpc).*|txc|.*[p$]|t{2})',
'table-name' = '(t[5-8]|tt)'
);
```
in doris-flink-connector，I tried using regular expressions, but failed，so How should I use it，thanks！

### Use case

_No response_

### Related issues

_No response_

### Are you willing to submit PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)

No source file or test is identified in the issue. Start by tracing how the doris-flink-connector handles the database-name option and compare it with the Flink CDC regex example provided. Done means determining whether regular expressions or multiple databases are supported, then implementing or documenting the supported behavior with validation for the example configuration.

Written by the indexing model from the issue text.