Refactor: replace utils.HParams with HyperParameters Pydantic model

HyperParameters is largely a drop-in replacement for utils.HParams, which ensures type safety for hyper-parameters.

style_bert_vits2/models/models_jp_extra.py

@@ -1029,10 +1029,10 @@ class SynthesizerTrn(nn.Module):
         bert,
         style_vec,
         noise_scale=0.667,
-        length_scale=1,
+        length_scale=1.0,
         noise_scale_w=0.8,
         max_len=None,
-        sdp_ratio=0,
+        sdp_ratio=0.0,
         y=None,
     ):
         # x, m_p, logs_p, x_mask = self.enc_p(x, x_lengths, tone, language, bert)