yavsc for Debian

See Debian policy manual section 4.14.
  https://www.debian.org/doc/debian-policy/ch-source.html#source-package-handling-debian-readme-source

If running dpkg-source -x on a source package doesn’t produce the source of the
package, ready for editing, and allow one to make changes and run
dpkg-buildpackage to produce a modified package without taking any additional
steps, creating this file explain how to do all of these is recommended.
Otherwise, remove this file.

    (Automatically generated by debmake Version 4.5.1)

 -- Paul Schneider <paul@localhost>  Sun, 08 Jun 2025 01:41:54 +0100