Support ERNIE-Image (#1389)

* ernie-image pipeline

* ernie-image inference and training

* style fix

* ernie docs

* lowvram

* final style fix

* pr-review

* pr-fix round2

* set uniform training weight

* fix

* update lowvram docs

examples/ernie_image/model_inference/Ernie-Image-T2I.py

@@ -0,0 +1,24 @@
+from diffsynth.pipelines.ernie_image import ErnieImagePipeline, ModelConfig
+import torch
+
+pipe = ErnieImagePipeline.from_pretrained(
+    torch_dtype=torch.bfloat16,
+    device='cuda',
+    model_configs=[
+        ModelConfig(model_id="baidu/ERNIE-Image", origin_file_pattern="transformer/diffusion_pytorch_model*.safetensors"),
+        ModelConfig(model_id="baidu/ERNIE-Image", origin_file_pattern="text_encoder/model.safetensors"),
+        ModelConfig(model_id="baidu/ERNIE-Image", origin_file_pattern="vae/diffusion_pytorch_model.safetensors"),
+    ],
+    tokenizer_config=ModelConfig(model_id="baidu/ERNIE-Image", origin_file_pattern="tokenizer/"),
+)
+
+image = pipe(
+    prompt="一只黑白相间的中华田园犬",
+    negative_prompt="",
+    height=1024,
+    width=1024,
+    seed=42,
+    num_inference_steps=50,
+    cfg_scale=4.0,
+)
+image.save("output.jpg")