Licence texts

• LICENSE_JBIG2
• LICENSE_OPENJPEG
• LICENSE_PDFJS_JBIG2
• LICENSE_PDFJS_OPENJPEG
• LICENSE_PDFJS_QCMS
• LICENSE_QCMS
• fflate-LICENSE.txt
• gifenc-LICENSE.txt
• heic-to-LICENSE.txt
• lamejs-LICENSE.txt
• libheif-js-LICENSE.txt
• pdf-lib-LICENSE.txt
• pdfjs-LICENSE.txt