Add Mac OS support for Apple Silicon (#770)

* Made an install script and auto updates env for mac

* GPU sensors and initial training working for MAC. Still WIP.

* Switch dataloader to single threaded until I can work around some mac pickeling issues.

* Get quantization working on mac

* Fix mac exclusive imports so they don't break other builds.

* Add mac instructions to the UI

extensions_built_in/sd_trainer/SDTrainer.py

@@ -39,11 +39,7 @@ import torch.nn.functional as F
 from toolkit.unloader import unload_text_encoder
 from PIL import Image
 from torchvision.transforms import functional as TF
-
-
-def flush():
-    torch.cuda.empty_cache()
-    gc.collect()
+from toolkit.basic import flush
 
 
 adapter_transforms = transforms.Compose([