Random button sets seed to -1, reuse copies the seed from the last
generated image.

split masking helper function from processing.py into new masking.py

* Fix process_images where the number of images is not a multiple of (batch_size * n_iter), which would cause us to throw an exception.
* Add a textbox option to Prompts from file (ease of use and it makes it much easier to use on a mobile device)
* Fix the fact that Prompts from file was sometimes passing an empty batch.

prevent replacing torch_randn globally (instead replacing k_diffusion.sampling.torch) and add a setting to disable this all

fix loopback color correction to store color_correction info for initial image and use that instead of extracting from previous image in a loop #481 #541

added the ability to use {prompt} in styles
added a button to apply style to textbox
rearranged top row for UI

Extras have none of the vars used in dir names, so they cant be saved into dirs.
+grid code cleanup

* numpy deprecation warning fix. Alternately, you could also specify float

Adds a "samples filename format" option in the settings. This format can be defined by tags for maximum flexibility and scalability.

Implemented workaround to allow the use of seeds with the mps/metal backend. Fixed img2img's use of unsupported precision float64 with mps backend.

fix broken prompt matrix