Add the applications and icons to the deb file

Closes surge-synthesizer#5846

scripts/installer_linux/assets/applications/Surge-XT-FX.desktop

@@ -0,0 +1,14 @@
+[Desktop Entry]
+Categories=AudioVideo;Audio;
+Comment=Surge XT Effects
+Exec="/usr/bin/Surge XT Effects"
+GenericName=Surge XT Effects
+Icon=surge-xt-fx
+MimeType=
+Name=Surge XT Effects
+NoDisplay=false
+Path=
+StartupNotify=true
+Terminal=false
+TerminalOptions=
+Type=Application

scripts/installer_linux/assets/applications/Surge-XT.desktop

@@ -0,0 +1,14 @@
+[Desktop Entry]
+Categories=AudioVideo;Audio;
+Comment=Free Open Source Hybrid Synthesizer
+Exec="/usr/bin/Surge XT"
+GenericName=Surge XT
+Icon=surge-xt
+MimeType=
+Name=Surge XT
+NoDisplay=false
+Path=
+StartupNotify=true
+Terminal=false
+TerminalOptions=
+Type=Application

scripts/installer_linux/make_deb.sh

@@ -74,6 +74,7 @@ gzip -9 -n ${PACKAGE_NAME}/usr/share/${SURGE_NAME}/doc/changelog.Debian
 
 cp ${SOURCEDIR}/LICENSE ${PACKAGE_NAME}/usr/share/${SURGE_NAME}/doc/copyright
 cp -r ${SOURCEDIR}/resources/data/* ${PACKAGE_NAME}/usr/share/${SURGE_NAME}/
+cp -r ${SOURCEDIR}/scripts/installer_linux/assets/* ${PACKAGE_NAME}/usr/share
 
 # Copy the VST3 bundle
 cp -r "${INDIR}/Surge XT.vst3" ${PACKAGE_NAME}/usr/lib/vst3/