add apkg-powered upstream packaging for deb, rpm

Files in a single new distro/ dir allow apkg to build BIRD packages for
various distros directly from upstream sources as well as from upstream
archives.

Please see distro/README.md for more detail as well as apkg docs:

https://apkg.rtfd.io

I've used these files to build bird-2.0.8 on all currently supported
releases of following distros:

* Debian
* Ubuntu
* Fedora
* CentOS
* openSUSE

Please note that latest apkg with accumulated fixes for bird is needed:
https://gitlab.nic.cz/packaging/apkg/-/merge_requests/35

1 files changed, 55 insertions, 0 deletions

diff --git a/distro/pkg/deb/control b/distro/pkg/deb/control
new file mode 100644
index 00000000..4935c696
--- /dev/null
+++ b/distro/pkg/deb/control
@@ -0,0 +1,55 @@
+Source: bird2
+Section: net
+Priority: optional
+Build-Depends: bison,
+               debhelper,
+               docbook-xsl,
+               flex,
+               libncurses5-dev,
+               libreadline-dev | libreadline6-dev | libreadline5-dev,
+               libssh-gcrypt-dev,
+               linuxdoc-tools-latex,
+               m4,
+               opensp,
+               quilt,
+               texlive-latex-extra,
+               xsltproc
+Maintainer: Jakub Ružička <jakub.ruzicka@nic.cz>
+Uploaders: Ondřej Surý <ondrej@debian.org>
+Standards-Version: 4.3.0
+Vcs-Browser: https://salsa.debian.org/debian/bird2
+Vcs-Git: https://salsa.debian.org/debian/bird2.git
+Homepage: https://bird.network.cz/
+
+Package: bird2
+Architecture: kfreebsd-any linux-any
+Pre-Depends: init-system-helpers (>= 1.56~),
+             ${misc:Pre-Depends}
+Depends: adduser,
+         lsb-base,
+         ucf,
+         ${misc:Depends},
+         ${shlibs:Depends}
+Conflicts: bird
+Suggests: bird2-doc
+Description: Internet Routing Daemon
+ BIRD is an Internet routing daemon with full support for all the major
+ routing protocols. It allows redistribution between protocols with a
+ powerful route filtering syntax and an easy-to-use configuration
+ interface.
+ .
+ BIRD supports IPv4 and IPv6 versions of OSPF, RIP, BGP and Babel routing
+ protocols. It also supports supplementary protocols like BFD, RPKI-Router
+ and IPv6 router advertisements.
+
+Package: bird2-doc
+Architecture: all
+Section: doc
+Depends: ${misc:Depends}
+Description: Internet Routing Daemon - documentation
+ BIRD is an Internet routing daemon with full support for all the major
+ routing protocols. It allows redistribution between protocols with a
+ powerful route filtering syntax and an easy-to-use configuration
+ interface.
+ .
+ This package provides the user and developer documentation.