Svelte component prop and description inference

[madeleineostoja]

Is your feature request related to a problem? Please describe
I couldn't find an issue tracking this, but there's currently no support for inferring props/arg and descriptions from Svelte components through the component field in CSF stories.

Describe the solution you'd like
Storybook should infer exported props and their types (if supplied with typescript) from Svelte components. I'm not sure how Storybook does its props inference, but I imagine it should be possible to parse .svelte components for their unique export let syntax for props.

Describe alternatives you've considered
It's possible to define your own props table with argTypes, but it's very cumbersome, especially when already using Typescript and JSDoc style comments in the actual component, to duplicate everything for storybook.

Are you able to assist to bring the feature to reality?
I don't think so, I have no idea how Storybook infers props currently. But I'd be happy to help however possible.

Additional context
N/A

[shilman]

@seaneking I believe that was added by @BlackFenix2 here and available in 6.1 alpha #12347

[madeleineostoja]

Amazing! Thanks I'll try it out