[Subtask] Support login function in dashboard module

### Code of Conduct

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

### Search before asking

- [X] I have searched in the [issues](https://github.com/apache/incubator-uniffle/issues) and found no similar issues.

### Describe the subtask

We have supported authentication in some interfaces in coordinator in #1948.
In the future, we will support request these interfaces through the dashboard module.
So I think we should add a login page.

I think this can be achieved like this:
1.Add a interface for login authentication in coordinator.
2.If the authentication is passed, Save the authentication credentials to the session in dashboard module
3.Put the credentials in the header each time request the coordinator.

### Parent issue

#1949

### Are you willing to submit PR?

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

Start by reading the coordinator authentication work in #1948 and the parent issue #1949, then trace how the dashboard module requests coordinator interfaces. The intended work is a dashboard login flow, session-stored credentials, and credentials in subsequent coordinator request headers; done means authenticated dashboard requests work across these interfaces.

Written by the indexing model from the issue text.