Support S1 (#22)

Author: abersheeran

src/fish_audio_sdk/schemas.py

@@ -5,7 +5,7 @@
 from pydantic import BaseModel, Field
 
 
-Backends = Literal["speech-1.5", "speech-1.6", "agent-x0"]
+Backends = Literal["speech-1.5", "speech-1.6", "agent-x0", "s1", "s1-mini"]
 
 Item = TypeVar("Item")