optimize(rmvpe): move rmvpe into rvc.f0

rvc/f0/dio.py

@@ -1,4 +1,4 @@
-from typing import Any, Optional
+from typing import Any, Optional, Union
 
 import numpy as np
 import pyworld
@@ -14,7 +14,7 @@ class Dio(F0Predictor):
         self,
         wav: np.ndarray[Any, np.dtype],
         p_len: Optional[int] = None,
-        filter_radius: Optional[int] = None,
+        filter_radius: Optional[Union[int, float]] = None,
     ):
         if p_len is None:
             p_len = wav.shape[0] // self.hop_length