support for diffusers

[tiptinker]

https://pypi.org/project/diffusers/

Pls update the code to support latest version of diffusers

[nofile]

try making the following changes in pipelines_ootd folder:

1. In transformer_garm_2d.py and transformer_vton_2d.py, replace "CaptionProjection" with "PixArtAlphaTextProjection".
2. In unet_garm_2d_blocks.py and unet_vton_2d_blocks.py, update the import statement from: "from diffusers.models.dual_transformer_2d import DualTransformer2DModel" to "from diffusers.models.transformers.dual_transformer_2d import DualTransformer2DModel".
3. In unet_garm_2d_condition.py and unet_vton_2d_condition.py, replace "PositionNet" with "GLIGENTextBoundingboxProjection".