[Improve][Connector-V2][Http] Http source supports user-defined custom signature algorithms for authentication

### Search before asking

- [x] I had searched in the [feature](https://github.com/apache/seatunnel/issues?q=is%3Aissue+label%3A%22Feature%22) and found no similar feature requirement.

### Description

Http source supports user-defined custom signature algorithms for authentication

### Usage Scenario

In our scenario, we obtain data from multiple third-party OpenAPIs. Each of these OpenAPIs requires validation of HTTP requests using their own HTTP signature algorithms. Therefore, it is necessary for the HTTP source to support user-defined signature algorithms.

for some example:
1. huawei :https://support.huaweicloud.com/devg-apisign/api-sign-algorithm-001.html
2. UC： https://docs.ucloud.cn/api/summary/signature

### Related issues

_No response_

### Are you willing to submit a PR?

- [x] 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)