Fix Approx NN previews changing first generation result

Add instruct-pix2pix hijack

Update requirement for transformers to version 4.25.1 to allow instruct-pix2pix demo code to work

Allows loading instruct-pix2pix models via same method as inpainting models in sd_models.py and sd_hijack_ip2p.py

Adds ddpm_edit.py necessary for instruct-pix2pix

Adds X/Y/Z Grid Script

add PIP_INSTALLER_LOCATION env var to install pip if it's not installed
remove accidental call to accelerate when venv is disabled
add another env var to skip venv - SKIP_VENV

this is mostly just so git can detect it properly

also return the removed field to sdapi/v1/upscalers because someone might have relied on it existing

Add exception handling to API image decode

Make SwinIR upscaler interruptible and skippable

Set Linux xformers 0.0.16RC425

The loading of the model for approx nn live previews can change the internal state of PyTorch, resulting in a different image. This can be avoided by preloading the approx nn model in advance.

Add selector to interrogate categories

you can all now stop worrying about it

Extra network view style

API should use same image format as specified in WebUI settings

add a message about new torch/xformers version and a way to upgrade by specifying a commandline flag