* Add DNNTSP Model

* refactor code

* refactor code

* Fix scoring function

* refactor code

* Add random seed

* refactor code

* refactor code

* Fix weight_mse and multi_label loss

* Update multi_label loss using sum reduction

---------

Co-authored-by: Quoc-Tuan Truong <tqtg@users.noreply.github.com>