GPU support on Apple Silicon (#30)

* Added support for MPS on Apple Silicon

* Requires PyTorch 2.0.0 or greater

* Update requirements.txt

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Co-authored-by: Timo Mom <timo.mom@concedro.com>
Co-authored-by: Maciej Budyś <kha-white@mail.com>

manga_ocr/ocr.py

@@ -18,6 +18,9 @@ class MangaOcr:
         if not force_cpu and torch.cuda.is_available():
             logger.info('Using CUDA')
             self.model.cuda()
+        if not force_cpu and torch.backends.mps.is_available():
+            logger.info('Using MPS')
+            self.model.to('mps')
         else:
             logger.info('Using CPU')