Manpages of src:sgf2dg in Debian buster

• Games::Go::Dg2ASCII(3pm)
• Games::Go::Dg2Mp(3pm)
• Games::Go::Dg2PDF(3pm)
• Games::Go::Dg2Ps(3pm)
• Games::Go::Dg2TeX(3pm)
• Games::Go::Dg2Tk(3pm)
• Games::Go::Dg2TkPs(3pm)
• Games::Go::Diagram(3pm)
• sgf2dg(1p)
• sgfsplit(1p)