Implement ImgLoaderIo for all XML based formats

[tischi]

One needs something like below also for:

BdvOmeZarr and BdvOmeZarrS3

@ImgLoaderIo(format = "bdv.n5.s3", type = N5S3ImageLoader.class)
public class XmlIoN5S3ImageLoader implements XmlIoBasicImgLoader<N5S3ImageLoader> {
    public static final String SERVICE_ENDPOINT = "ServiceEndpoint";
    public static final String SIGNING_REGION = "SigningRegion";
    public static final String BUCKET_NAME = "BucketName";
    public static final String KEY = "Key";