Create & install 16, 24, 32, 48, 64px icons

Author: thebaer

…icons/com.github.writeas.writeas-gtk.png …s/128/com.github.writeas.writeas-gtk.pngdata/icons/com.github.writeas.writeas-gtk.png renamed to data/icons/128/com.github.writeas.writeas-gtk.png data/icons/com.github.writeas.writeas-gtk.png renamed to data/icons/128/com.github.writeas.writeas-gtk.png

@@ -1,6 +1,13 @@
-install_data('icons/com.github.writeas.writeas-gtk.png',
-    install_dir: join_paths(get_option('datadir'), 'icons', 'hicolor', '128x128', 'apps')
-)
+icon_sizes = ['16', '24', '32', '48', '64', '128']
+
+foreach i : icon_sizes
+    install_data(
+        join_paths('icons', i, meson.project_name() + '.png'),
+            install_dir: join_paths(get_option('datadir'), 'icons', 'hicolor', i + 'x' + i, 'apps'
+        )
+    )
+endforeach
+
 install_data('icons/writeas-bright-dark.png',
     install_dir: join_paths(get_option('datadir'), 'icons', 'hicolor', '16x16', 'actions'))