[vulkan] Add prepacking for conv2d_transpose (#67358)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/67358
Test Plan: Imported from OSS
Reviewed By: beback4u
Differential Revision: D31970903
Pulled By: SS-JIA
fbshipit-source-id: 128deb40dc14fb97aa61af9cddab4540b630359e
