Update pipelines with pydantic

Signed-off-by: shiyu22 <shiyu.chen@zilliz.com>

audio_embedding.py

@@ -1,20 +1,22 @@
+from posixpath import basename
+from typing import Optional
+from pydantic import BaseModel
 from towhee import pipe, ops, AutoPipes, AutoConfig
 
 
 @AutoConfig.register
-class AudioEmbeddingConfig:
-    def __init__(self):
-        # config for audio_decode.ffmpeg
-        self.batch_size = -1
-        self.sample_rate = None
-        self.layout = None
-        
-        # config for audio_embedding.vggish
-        self.weights_path: str = None
-        self.framework: str = 'pytorch'
-        
-        # config for triton
-        self.device = -1
+class AudioEmbeddingConfig(BaseModel):
+    # config for audio_decode.ffmpeg
+    batch_size: Optional[int] = -1
+    sample_rate: Optional[float] = None
+    layout: Optional[str] = None
+
+    # config for audio_embedding.vggish
+    weights_path: Optional[str] = None
+    framework: Optional[str] = 'pytorch'
+
+    # config for triton
+    device: Optional[int] = -1
 
 
 @AutoPipes.register