Added 2 additional possible entries in the api request: alwayson_script_name, a string list, and, alwayson_script_args, a list of list containing the args of each script. This allows us to send args to always on script and keep backwards compatibility with old script_name and script_arg api params

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

remove random artist built-in extension (to re-added as a normal extension on demand)
remove artists.csv (but what does it mean????????????????????)
make interrogate buttons show Loading... when you click them

rework of hypernets: rather than via settings, hypernets are added directly to prompt as <hypernet:name:weight>

remove calls to locals()
add a test for img2img with script

set sd_model for API later, inside the lock, to prevent multiple requests with different models ending up with incorrect results #5877 #6012

API endpoint to refresh checkpoints