Add files to build Debian package

According to the de facto project layout for Go[0], these files should
go into a build/package folder, but since i already broke the rules with
Sqitch’s folders, i do not see why i have to go against Debian’s
conventions of putting it into a debian subfolder of the root.

[0]: https://github.com/golang-standards/project-layout

debian/changelog

@@ -0,0 +1,5 @@
+numerus (0.0~git00000000000000.0000000) bullseye; urgency=medium
+
+  * Initial release.
+
+ -- jordi fita mas <jordi@tandem.blog>  Sun, 01 Jan 2023 01:07:46 +0000

debian/control

@@ -0,0 +1,23 @@
+Source: numerus
+Section: web
+Priority: optional
+Maintainer: jordi fita mas <jordi@tandem.blog>
+Build-Depends:
+  debhelper-compat (= 13),
+  dh-golang,
+  golang-any,
+  golang-github-jackc-pgx-v4-dev,
+Standards-Version: 4.6.0
+XS-Go-Import-Path: dev.tandem.ws/tandem/numerus
+Vcs-Browser: https://dev.tandem.ws/tandem/numerus
+Vcs-Git: https://dev.tandem.ws/tandem/numerus.git
+Homepage: https://dev.tandem.ws/tandem/numerus
+Rules-Requires-Root: no
+
+Package: numerus
+Architecture: any
+Depends:
+ ${misc:Depends}
+Description: Simple invoicing and accounting web application
+ A simple web application to keep invoice and accouting records, intended for
+ contractors working in Spain.

debian/copyright

@@ -0,0 +1,10 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Source: https://dev.tandem.ws/tandem/numerus
+Upstream-Name: numerus
+Upstream-Contact: jordi@tandem.blog
+
+Files:
+ *
+Copyright:
+ 2023 jordi fita mas
+License: AGPL-3.0-only

debian/rules

@@ -0,0 +1,4 @@
+#!/usr/bin/make -f
+
+%:
+	dh $@ --builddirectory=_build --buildsystem=golang --with=golang

debian/source/format

@@ -0,0 +1 @@
+3.0 (native)