Add Flet desktop client

Client/Packaging/SaraSuite/Templates/SaraView.desktop

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+[Desktop Entry]
+Type=Application
+Name=SaraView
+Comment=View and edit files, locally or on a SaraView server
+Exec={AppDir}/Client/Packaging/Launch.sh
+Icon={AppDir}/Client/assets/Icon.png
+Terminal=false
+Categories=Utility;
+StartupNotify=true
+StartupWMClass=srhtnin.{Name}