starrocks [Feature] concat_ws supports array type parameters

Why I'm doing:

When I use hive, the second parameter of concat_ws can be of array type. After migrating to starrocks, it needs to be changed to array_join, and the order of parameters also needs to be changed, which makes migration difficult.

What I'm doing:

A new concat_ws function that supports array input parameters is added in be, and the code logic of array_join is used

Fixes #issue

What type of PR is this:

[ ] BugFix
[x] Feature
[ ] Enhancement
[ ] Refactor
[ ] UT
[ ] Doc
[ ] Tool

Does this PR entail a change in behavior?

[x] Yes, this PR will result in a change in behavior.
[ ] No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

[x] Interface/UI changes: syntax, type conversion, expression evaluation, display information
[ ] Parameter changes: default values, similar parameters but with different default values
[ ] Policy changes: use new policy to replace old one, functionality automatically enabled
[ ] Feature removed
[ ] Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

[x] I have added test cases for my bug fix or my new feature
[x] This pr needs user documentation (for new or modified features or behaviors)
- [x] I have added documentation for my new feature or new function
[ ] This is a backport pr