[Enhancement](good-first-issue) Support some url functions

[zclllyybb]

Search before asking

• I had searched in the issues and found no similar issues.

Description

clickhouse support some url functions which we don't support now.
in this case, you need to implement:

1. cutToFirstSignificantSubdomain
2. topLevelDomain
3. firstSignificantSubdomain

Solution

To support a function, we need:

function implementation and registration in BE
function signature and visitor for nereids planner in FE
another function docs pr in https://github.com/apache/doris-website
you can reference pr like https://github.com/apache/doris/pull/33005/files

and ATTN! we must have enough testcases, like what https://github.com/apache/doris/pull/40462/files did.

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[gotosleeponesummer]

I want to solve this problem.