Indentation + ruff whitespace fixes

Make live previews use JPEG only for large images

Fix symlink scanning for extra networks

Use CPU Torch in CI, etc.

Vendor Roboto font

Update clean-fid to loosen transitive dependency pins

Diff: https://github.com/GaParmar/clean-fid/compare/bd92e684ff06819058083c5a9fddc6f712045d46...c8ffa420a3923e8fd87c1e75170de2cf59d2644b

UniPC progress bar adjustment

change live preview format to jpeg to prevent unreasonably slow previews for large images, and add an option to let user select the format

Update sub_quadratic_attention.py

1. Determine the number of query chunks.
2. Calculate the final shape of the res tensor.
3. Initialize the tensor with the calculated shape and dtype, (same dtype as the input tensors, usually)

Can initialize the tensor as a zero-filled tensor with the correct shape and dtype, then compute the attention scores for each query chunk and fill the corresponding slice of tensor.

allow setting defaults for elements in extensions' tabs
fix a problem with ESRGAN upscalers disappearing after UI reload
implicit change: HTML element id for train tab from tab_ti to tab_train (will this break things?)

Ruff

Replace pylint CI with ruff