pdfRender: WEBP format support added

import com.itextpdf.licensekey.LicenseKey;
import com.itextpdf.pdfrender.PdfRenderImageType;
import com.itextpdf.pdfrender.PdfToImageRenderer;
import com.itextpdf.pdfrender.RenderingProperties;
import java.io.File;
import java.io.IOException;

public class WEBP_Example {
    public static final String DEST = "results/result";
    public static final String SRC = "src/main/resources/simple.pdf";
    private static final String KEY = "src/main/resources/itextkey_pdfRender.xml";

    static {
        new File(DEST).getParentFile().mkdirs();
    }

    public static void main(String[] args) throws IOException {
        LicenseKey.loadLicenseFile(KEY);
        RenderingProperties properties = new RenderingProperties();
        properties.setImageType(PdfRenderImageType.WEBP);

        // Render PDF to images
        PdfToImageRenderer.renderPdf(new File(SRC), DEST, properties, null, null);
    }
}