Add support for using `--upcast-sampling` with SD XL

Fix wrong key name in lokr module

record time it took to launch

XYZ always_discard_next_to_last_sigma

lora extension rework to include other types of networks

read networks from LyCORIS dir if it exists
add credits

linter

update lora code
support full module

Co-authored-by: Franck Mahon <franck.mahon@gmail.com>

Added a prompt for users using poor scaling

SD XL support

fix description editing for checkpoint not immediately appearing on cards

Added [none] filename token.

allow replacing extensions index with environment variable

Warns merge into master

404 when thumb file not found