Update launch_utils.py - fixes repetead package reinstalls

Fixes failing dependency checks for extensions having a different package name and import name (for example ffmpeg-python / ffmpeg), which currently is causing the unneeded reinstall of packages at runtime.

In fact with current code, the same string is used when installing a package and when checking for its presence, as you can see in the following example:

> launch_utils.run_pip("install ffmpeg-python", "required package")
[ Installing required package: "ffmpeg-python" ... ]
[ Installed ]

> launch_utils.is_installed("ffmpeg-python")
False

... which would actually return true with:

> launch_utils.is_installed("ffmpeg")
True

Add import_hook hack to work around basicsr/torchvision incompatibility

slight optimization for mask and mask_composite 

Fixes #13985

Fix `save_samples` being checked early when saving masked composite

Re-add `keyedit_delimiters_whitespace` setting lost as part of commit e294e46d

Initial IPEX support for Intel Arc GPU

preprocessing upscale: do not do an extra upscale step if it's not needed

dir buttons start with / so only the correct dir will be shown and no…

use extension name for determining an extension is installed in the index

catch uncaught exception with ui creation scripts

Allow use of mutiple styles csv files

Support XYZ scripts / split hires path from unet

Update devices.py - Make 'use-cpu all' actually apply to 'all'

Fix auto focal point crop for opencv >= 4.8

add Block component creation callback

Add FP32 fallback support on sd_vae_approx

fix not able to exit metadata popup when pop up is too big

Add support for SD 2.1 Turbo

infotext updates: add option to disregard certain infotext fields, add option to not include VAE in infotext, add explanation to infotext settings page, move some options to infotext settings page

Fix bug where is_using_v_parameterization_for_sd2 fails because the sd_hijack is only partially undone