Allow faceswaplab to run before other extensions

[hassan-sd]

With Reactor, I can rename the extension folder to _sd-webui-reactor which allows me to perform a faceswap directly after the image is generated but before other extensions like Adetailer.

When I try to rename faceswaplab it doesn't make a difference, it always runs last, after Adetailer has run.

The benefit of running before Adetailer means I can do a faceswap and enhance the details with my adetailer ultralytics models such as eyes/face/hair etc. on the already faceswapped image.
The faceswaplab "post processing" isn't as sufficient as using Adetailer to perform enhancements to specific areas.

Request
Allow a custom setting so we can choose to run faceswaplab at different stages of the image creation process in txt2img, such as 1st or last.

[zexcster]

Even more, would be good to have it run before the highres fix

[isu-shrestha]

Same. Seems to me that we are deliberately running this last. If someone could point to the part of code that is doing this, I can
update and send in a PR