Export response type when fetching from storage

[s0h311]

Hello people,
I wanted to use the response type of supabaseClient.storage.from('picture').upload('fileName', file) but there was no type exported so I wrote a type definition and exported it.
I assumed, that no issue would be needed for my PR (supabase/storage-js#177) but there it is.

[s0h311]

I hope "documentation" is appropriate.

[mandarini]

I will be closing this issue since it has no activity for more than 2 years.

If you find that the issue persists on the latest version of our libs, feel free to open a new one, ideally with a small reproduction repository.

Thank you for your patience and for contributing to Supabase!