Add support for image transformations in bulk storage URL signing (getSignedUrls)

At the time of writing, Supabase storage supports creating temporary signed URLs with image transformations applied for single image objects. This is documented officially in the following places: 1. 1. However, there is currently no way to sign a list of URLs with image transformation options. So: • createSignedUrl supports image transformations • createSignedUrls does NOT support image transformations Based on community feedback, I'm not the only one who has run into this use case not being supported. Please see dating back to June 2023. It would be great to see this implemented. Based on my research, it should be a trivial feature request since the functionality already exists for createSignedUrl. From my understanding, an update to the supabase/storage-js client library would need to be made and supabase/storage server would need to be made. For someone implementing, please take a look at my comment for a partial investigation into the scope…