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

x-ref #31955

Describe the solution you'd like

i want to be able to move vitest.config.ts to a config/ folder, to de-clutter the project root.

@storybook/addon-vitest should accept a configuration option in main.ts, which allows passing a custom location for vitest.config.ts to the addon.

Describe alternatives you've considered

No response

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

no

Additional context

No response