Provide rule to set a debian package

* Initialize context to generate debian package
* ```dpkg-buildpackage -us -uc -b```

debian/changelog

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+shrinkpdf (1.1.0) stable; urgency=low
+  Changes since v1.0:
+  Add an optional argument to output a grayscale PDF.
+  #3: Check for equal input and output files to avoid truncation.
+  #4: Update README.md.
+  #5: Replace optional positional arguments with option flags.
+ -- Alfred Klomp <[email protected]>  Sat, 11 Jun 2022 01:08:12 +0200
+
+shrinkpdf (1.0.0) stable; urgency=low
+  The shrinkpdf script has been available for a long time on its project website. It has gone through a number of iterations, but was never properly versioned.
+  The script is quite battle-tested by now, so let's create a first official release.
+ -- Alfred Klomp <[email protected]>  Mon, 23 May 2022 22:18:29 +0200

debian/compat

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+10

debian/control

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+Source: shrinkpdf
+Section: admin
+Priority: optional
+Maintainer: Camille Lafitte <[email protected]>
+Build-Depends: debhelper (>= 9),
+               devscripts,
+               git
+Standards-Version: 3.9.8
+
+Package: shrinkpdf
+Architecture: all
+Depends: ghostscript,
+       , awk
+       , ${misc:Depends}
+Description: Wrapper to shrink PDFs around Ghostscript
+ A simple wrapper around Ghostscript to shrink PDFs (as in reduce 
+ filesize) under Linux. Inspired by some code I found in an 
+ OpenOffice Python script (I think). 
+ The script feeds a PDF through Ghostscript, which performs lossy 
+ recompression by such methods as downsampling the images to 72dpi. 
+ .
+ The result should be (but not always is) a much smaller file.
+Homepage: https://github.com/aklomp/shrinkpdf

debian/copyright

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+
+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: shrinkpdf
+Source: https://github.com/aklomp/shrinkpdf.git
+
+Files: *
+Copyright: Copyright (c) 2014-2022, Alfred Klomp
+License: 3-clause BSD license
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ 1. Redistributions of source code must retain the above copyright notice,
+     this list of conditions and the following disclaimer.
+  2. Redistributions in binary form must reproduce the above copyright notice,
+     this list of conditions and the following disclaimer in the documentation
+     and/or other materials provided with the distribution.
+  3. Neither the name of the copyright holder nor the names of its contributors
+     may be used to endorse or promote products derived from this software
+     without specific prior written permission.
+ .
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.

debian/install

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+shrinkpdf.sh /usr/bin/

debian/rules

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+#!/usr/bin/make -f
+# Sample debian/rules that uses debhelper.
+# This file is public domain software, originally written by Joey Hess.
+#
+# This version is for a multibinary package. It also allows you to build any
+# of the binary packages independantly, via binary-<package> targets.
+
+# Uncomment this to turn on verbose mode.
+export DH_VERBOSE=1
+
+#Define version packaging
+#Exclude nighly version
+VERSION=$(shell git tag -l --points-at HEAD |grep -v 'nightly')
+ifeq ($(strip $(VERSION)),)
+	VERSION=$(shell git tag | sort -V |grep -v nightly|tail -1)
+	ifeq ($(strip $(VERSION)),)
+		export VERSION="0.0.0"
+	endif
+	VERSION:=$(VERSION)+$(shell date +'%y%m%d%H%M%S')
+	IS_NIGHTLY=1
+endif
+
+clean:
+	dh clean
+	rm -f debian/files
+	(git rev-parse --git-dir > /dev/null 2>&1 && git checkout debian/changelog) || true
+ifeq ($(strip $(IS_NIGHTLY)),1)
+	(git rev-parse --git-dir > /dev/null 2>&1 && dch -m -b -v $(VERSION) autobuild) || true
+endif
+%:
+	dh $@
+