add metafont highlighting file
add metafont highlighting file

thanks to Yed Vilun for the file

BUG: 229275

cmacq2/kate,sandsmark/kate,hlamer/kate,hlamer/kate,sandsmark/kate,hlamer/kate,jfmcarreira/kate,jfmcarreira/kate,hlamer/kate,DickJ/kate,DickJ/kate,cmacq2/kate,sandsmark/kate,cmacq2/kate,DickJ/kate,DickJ/kate,sandsmark/kate,hlamer/kate,hlamer/kate,jfmcarreira/kate,hlamer/kate,hlamer/kate,hlamer/kate,hlamer/kate