chore(storybook): move styles to storybook folder

[goulinkh]

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[advl]

LGTM but what is the rationale for the change ? Also should we do similarly for other packages ?

[goulinkh]

@advl this is related to the launchpad design tokens, where the end project is expected to do these imports.
In the case of storybook, it is considered as an end project so it is doing the imports for it self, the old place for these css files was confusing since they are only included inside the storybook.

[goulinkh]

This entire logic is specific to Svelte app tier packages that are using Launchpad design tokens, and will be replaced with the new set of tokens eventually and align with React architecture.

[advl]

Yes. I do think though that we could do this for other packages. The end the general styles are required only for storybook and are not exported from the packages.

[goulinkh]

@advl I have applied the change to the react packages as well, could you please take a second look at this.