fix Debian package errors (#288)

* Fix lintian errors

Fix lintian errors
Short description in debian/changelog to hide lintian changelog warnings
Use launcher scripts that run java and electron from /usr/bin

* Update changelog version

* Rename laucnher scripts. Put electron installaion guide in electron-launcher-standalone.sh

* Seperate debian packager codes from unix-bundler.sh

* chmod +x debian-packager.sh

* Fix mistakes

* Fix mistakes

* Add missing '!' to shebang

* Change faviconlogo.png to tachidesk.png

* Change faviconlogo.png to tachidesk.png

scripts/debian-packager.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# Copyright (C) Contributors to the Suwayomi project
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+echo "creating debian package"
+jar=$(ls ../server/build/*.jar | tail -n1)
+release_ver=$(tmp="${jar%-*}" && echo "${tmp##*-}" | tr -d v)
+orig_dir="tachidesk-$release_ver"                # dir uses hyphen "-"
+orig_tar_gz="tachidesk_$release_ver.orig.tar.gz" # orig file uses underscore "_"
+package_name="tachidesk_$release_ver-1_all.deb"
+
+# copy artifacts
+mkdir "$orig_dir"
+cp "$jar" "$orig_dir/Tachidesk.jar"
+cp -r "resources/debian" "$orig_dir"
+cp "resources/tachidesk-browser-launcher-standalone.sh" "$orig_dir/debian"
+cp "resources/tachidesk-debug-launcher-standalone.sh" "$orig_dir/debian"
+cp "resources/tachidesk-electron-launcher-standalone.sh" "$orig_dir/debian"
+cp "resources/tachidesk.desktop" "$orig_dir/debian"
+cp "../server/src/main/resources/icon/faviconlogo.png" "$orig_dir/debian/tachidesk.png"
+
+# prepare
+tar cvzf "$orig_tar_gz" "$orig_dir/Tachidesk.jar"
+sed -i "s/\${version}/$release_ver/" "$orig_dir/debian/changelog"
+
+# build
+mkdir "build"
+mv $orig_dir $orig_tar_gz "build/"
+cd "build/$orig_dir/debian"
+sudo apt install devscripts build-essential dh-exec
+# --lintian-opts --profile debian: build Debian packages on Ubuntu
+debuild -uc -us --lintian-opts --profile debian
+cd -
+
+# clean build directory
+mv "build/$package_name" "./"
+rm -rf "build"
+
+# clean up from possible previous runs
+if [ -f "../server/build/$package_name" ]; then
+  rm "../server/build/$package_name"
+fi
+
+mv "$package_name" "../server/build/"