Manpages of displaycal in Debian bullseye-backports

• displaycal-3dlut-maker(1)
• displaycal-apply-profiles(1)
• displaycal-curve-viewer(1)
• displaycal-profile-info(1)
• displaycal-scripting-client(1)
• displaycal-synthprofile(1)
• displaycal-testchart-editor(1)
• displaycal-vrml-to-x3d-converter(1)
• displaycal(1)