Added shared.cmd_opts.data_dir prefix to "outputs" and "log" paths.

[canoalberto]

Description

Added shared.cmd_opts.data_dir prefix to "outputs" and "log" paths.

Fixes the issue where hardcoded default "outputs" and "log" paths may not be writable and enables placing them under --data-dir option path.

Screenshots/videos:

NA

Checklist:

• [X] I have read contributing wiki page
• [X] I have performed a self-review of my own code
• [X] My code follows the style guidelines
• [X] My code passes tests

[w-e-w]

related conversation https://github.com/AUTOMATIC1111/stable-diffusion-webui/pull/14442#issuecomment-1870607628

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lol didn't realize you basically have the same idea as me

[w-e-w]

I made an alternative implementation with some changes see PR https://github.com/AUTOMATIC1111/stable-diffusion-webui/pull/14446

namely truncating the path to CWD when possible (so if one is not using --data-dir it behave the same as before)

I added you as co-author

[AUTOMATIC1111]

I merged the other one. Just was wew proposes, I'd rather not absolute paths to config by default.