Add desktop file

Fixes #5

data/meson.build

-# SPDX-FileCopyrightText: 2016-2020 Bruce Cowan <bruce@bcowan.me.uk>
+# SPDX-FileCopyrightText: 2016-2021 Bruce Cowan <bruce@bcowan.me.uk>
 #
 # SPDX-License-Identifier: CC0-1.0
 
@@ -6,6 +6,16 @@ resources = gnome.compile_resources('gen-resources',
                                     'rugby.gresource.xml',
                                     source_dir: 'data')
 
+desktop_file = 'uk.me.bcowan.Rugby.desktop'
+install_data(desktop_file,
+    install_dir: join_paths(get_option('datadir'), 'applications'))
+
+desktop_utils = find_program('desktop-file-validate', required: false)
+if desktop_utils.found()
+    test('Validate desktop file', desktop_utils,
+        args: [desktop_file])
+endif
+
 compiled_schemas = gnome.compile_schemas(
   build_by_default: true,
   depend_files: 'uk.me.bcowan.Rugby.gschema.xml',

data/uk.me.bcowan.Rugby.desktop

+# SPDX-FileCopyrightText: 2020-2021 Bruce Cowan <bruce@bcowan.me.uk>
+#
+# SPDX-License-Identifier: CC0-1.0
+
+[Desktop Entry]
+Name=Rugby
+Exec=rugby
+Terminal=false
+Type=Application
+Categories=GNOME;GTK;Sports;Calculator;Utility
+StartupNotify=true