Manpages of src:performous in Debian buster

• gh_fsb_decrypt(1)
• gh_xen_decrypt(1)
• itg_pck(1)
• performous-tools(7)
• performous(6)
• ss_adpcm_decode(1)
• ss_archive_extract(1)
• ss_chc_decode(1)
• ss_cover_conv(1)
• ss_extract(1)
• ss_ipu_conv(1)
• ss_pak_extract(1)