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_gen.py

@@ -8,6 +8,7 @@ from tqdm import tqdm
 
 from style_bert_vits2.logging import logger
 from style_bert_vits2.models import utils
+from style_bert_vits2.models.hyper_parameters import HyperParameters
 from style_bert_vits2.utils.stdout_wrapper import SAFE_STDOUT
 from config import config
 
@@ -72,7 +73,7 @@ if __name__ == "__main__":
     config_path = args.config
     num_processes = args.num_processes
 
-    hps = utils.get_hparams_from_file(config_path)
+    hps = HyperParameters.load_from_json(config_path)
 
     device = config.style_gen_config.device