              The backend configuration in use by Faceswap
          """
          print("First time configuration. Please select the required backend")
          while True:
              selection = input("1: AMD, 2: CPU, 3: NVIDIA, 4: Apple: ")
              if selection not in ("1", "2", "3", "4"):
                  print(f"'{selection}' is not a valid selection. Please try again")
                  continue
              break
          fs_backend = self._backends[selection].lower()
 
</s> remove     backend: ["amd", "cpu", "nvidia", "apple"]
 </s> add     backend: ["amd", "cpu", "nvidia", "apple_silicon"] </s> remove         self._backends = {"1": "amd", "2": "cpu", "3": "nvidia", "4": "apple"}
 </s> add         self._backends = {"1": "amd", "2": "cpu", "3": "nvidia", "4": "apple_silicon"} </s> remove             backend = "apple"
 </s> add             backend = "apple_silicon" </s> remove elif backend == "apple":
 </s> add elif backend == "apple_silicon":
            selection = input("1: AMD, 2: CPU, 3: NVIDIA, 4: Apple Silicon: ")
              The backend configuration in use by Faceswap
          """
          print("First time configuration. Please select the required backend")
          while True:
            selection = input("1: AMD, 2: CPU, 3: NVIDIA, 4: Apple Silicon: ")
              if selection not in ("1", "2", "3", "4"):
                  print(f"'{selection}' is not a valid selection. Please try again")
                  continue
              break
          fs_backend = self._backends[selection].lower()
keep keep keep keep replace keep keep keep keep keep
 Rename Apple Silicon backend to apple_silicon 
lib/utils.py