GitLab

* [moe] add mixtral block for single expert

* [moe] mixtral block fwd support uneven ep

* [moe] mixtral block bwd support uneven ep

* [moe] add mixtral moe layer

* [moe] simplify replace

* [meo] support save sharded mixtral

* [meo] support load sharded mixtral

* [meo] support save sharded optim

* [meo] integrate moe manager into plug

* [meo] fix optimizer load

* [meo] fix mixtral layer