Instead of checking subfolders of the remote storage immudb checks it from the root.

[MaksymVynohradovDA]

Hi! According to the codebase we have:

	// Ensure all sub-folders are created, init code relies on this
	_, subFolders, err := storage.ListEntries(context.Background(), "")

And in this case we cant deal with two DB that keep their data in the same S3 but separate subfolders.

So I expect something like:

	// Ensure all sub-folders are created, init code relies on this
	_, subFolders, err := storage.ListEntries(context.Background(), s.Options.RemoteStorageOptions.S3PathPrefix+"/")

Probably I'm wrong, but it would be nice if you take a look. Thanks!