Save settings.json to XDG_CONFIG_HOME/storybook/ instead of HOME/.storybook/

[tomhonour]

Is your feature request related to a problem? Please describe.

I'd love it if storybook could support the XDG Base Directory specification

Describe the solution you'd like

From a very quick glance, the path is set on line 10 of globalSettings.ts:

const DEFAULT_SETTINGS_PATH = join(homedir(), '.storybook', 'settings.json');

You would just need to check if XDG_CONFIG_HOME is set, and fallback to homedir.

Describe alternatives you've considered

No response

Are you able to assist to bring the feature to reality?

yes, I can

Additional context

No response

[maxpatiiuk]

Yes please.
Please respect XDG and keep my home dir clean.