Grouped notifications (#345)

* Initial animation work

* Added custom icon

* Fixed collapse icon not being symbolic

* Centered collapse button

* Fixed group of 2 notifications being invisible

* Added back notification logic

Notifications are now separated into their own group depending on their provided name

* Added close all button

Also changed the notification close button icon to the new provided icon

* Fixed replacing notifications not working as expected

* Fixed group sensitivity not being set when auto collapsed

* Don't group notis with no provided app-name/desktop-file

Also adds parsing of desktop file in NotiModel which helps with getting and using the display name as the group name

* Remove testing notifications

* General fixes

* Added fade to cc viewport

* Added padding to cc viewport fade

* Call on_expand_change on close all button click

* Updated README

* Sort critical notification groups before regular groups

* Added group title icon

* Fixed not being able to navigate through single notifications

* Scroll to top of group on expand

* Fix non expanded single noti groups being clickable

* Fixed linting issues

* Added styling

* Fixed invalid style reload cast

* Set lower ordered notifications content opacity to 0

* Added hover effect to groups

data/icons/meson.build

@@ -0,0 +1,4 @@
+app_resources += gnome.compile_resources('icon-resources',
+  'swaync_icons.gresource.xml',
+  c_name: 'sway_notification_center_icons'
+)

data/icons/swaync-close-symbolic.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg height="16px" viewBox="0 0 16 16" width="16px" xmlns="http://www.w3.org/2000/svg">
+    <path d="m 4 4 h 1 h 0.03125 c 0.253906 0.011719 0.511719 0.128906 0.6875 0.3125 l 2.28125 2.28125 l 2.3125 -2.28125 c 0.265625 -0.230469 0.445312 -0.304688 0.6875 -0.3125 h 1 v 1 c 0 0.285156 -0.035156 0.550781 -0.25 0.75 l -2.28125 2.28125 l 2.25 2.25 c 0.1875 0.1875 0.28125 0.453125 0.28125 0.71875 v 1 h -1 c -0.265625 0 -0.53125 -0.09375 -0.71875 -0.28125 l -2.28125 -2.28125 l -2.28125 2.28125 c -0.1875 0.1875 -0.453125 0.28125 -0.71875 0.28125 h -1 v -1 c 0 -0.265625 0.09375 -0.53125 0.28125 -0.71875 l 2.28125 -2.25 l -2.28125 -2.28125 c -0.210938 -0.195312 -0.304688 -0.46875 -0.28125 -0.75 z m 0 0" fill="#2e3436"/>
+</svg>

data/icons/swaync-collapse-symbolic.svg

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg height="16px" viewBox="0 0 16 16" width="16px" xmlns="http://www.w3.org/2000/svg">
+  <path d="M 4 2.5 C 4 2.234 4.106 1.98 4.293 1.793 C 4.684 1.402 5.317 1.402 5.707 1.793 L 8 4.086 L 10.293 1.793 C 10.684 1.402 11.317 1.402 11.707 1.793 C 11.895 1.98 12 2.234 12 2.5 C 12 2.766 11.895 3.019 11.707 3.207 L 8.707 6.207 C 8.317 6.598 7.684 6.598 7.293 6.207 L 4.293 3.207 C 4.106 3.019 4 2.766 4 2.5 Z" fill="#2e3436"/>
+  <path d="M 4 13.5 C 4 13.766 4.106 14.019 4.293 14.207 C 4.684 14.598 5.317 14.598 5.707 14.207 L 8 11.914 L 10.293 14.207 C 10.684 14.598 11.317 14.598 11.707 14.207 C 11.895 14.019 12 13.766 12 13.5 C 12 13.234 11.895 12.98 11.707 12.793 L 8.707 9.793 C 8.317 9.402 7.684 9.402 7.293 9.793 L 4.293 12.793 C 4.106 12.98 4 13.234 4 13.5 Z" fill="#2e3436"/>
+</svg>

data/icons/swaync_icons.gresource.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/org/erikreider/swaync/icons/scalable/actions">
+    <file preprocess="xml-stripblanks">swaync-collapse-symbolic.svg</file>
+    <file preprocess="xml-stripblanks">swaync-close-symbolic.svg</file>
+  </gresource>
+</gresources>

data/meson.build

@@ -2,6 +2,8 @@ install_data('org.erikreider.swaync.gschema.xml',
   install_dir: join_paths(get_option('datadir'), 'glib-2.0/schemas')
 )
 
+subdir('icons')
+
 compile_schemas = find_program('glib-compile-schemas', required: false)
 if compile_schemas.found()
   test('Validate schema file', compile_schemas,