Fix the no attribute 'all_tied_weights_keys' issue in transformers==5.0.0.

For the compatibility with the meta device used in transformers==5.0.0.

Upgrade the ways of importing timm modules (>=1.0.23).

For the compatibility with the latest transformers lib.

Fix the bug by latest transformers and update req.txt.

Align lib_name as birefnet and add inference endpoint option.

Dtype adaptability between FP32 and FP16 in inference.

Update birefnet.py

Initial uploading of the BiRefNet for general use with swin_v1_tiny as the backbone.