sd: add eta support

[wbruna]

Controls the amount of noise for ancestral samplers (euler_a, res_multistep, ddim, etc).

Pretty straightforward; just had to force negatives to handle the default value, since 0.0 is a valid value.

[LostRuins]

Btw @wbruna this didn't build again, You missed out changing generator.ts and outputs.ts, which I fixed post merge here: LostRuins/stable-ui@5c52ea4 (i still can't push commits to your PR branch)

I'd recommend enabling strict mode and doing a test build first, so this doesn't happen. Or maybe you've misconfigured gitignore for this project and it's missing some files in the PR. Anyway, its fixed now

[LostRuins]

oops, meant to tag the sdui repo LostRuins/stable-ui#21. but yeah

[wbruna]

Btw @wbruna this didn't build again, You missed out changing generator.ts and outputs.ts, which I fixed post merge here:

Ouch, sorry 🙁 I did test and LLM-reviewed everything; but I had changed those last minute, because I didn't know if putting constant values there could cause any weird Vue issues, and likely didn't include the changed .ts files on git.