GitLab

* Feature/vit support (#4182)

* [shardformer] added tests

* [shardformer] vit test finish and support

* fix attention dropout

* support base vit pipeline

* support vit downstream model

* fix vit shard test

* modify hidden states return type

---------
Co-authored-by: Kun Lin <81014421+klhhhhh@users.noreply.github.com>