[gnome-todo] flatpak: Add libadwaita

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 12eea9e776f366333620531a013eddccfa137611
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Apr 3 19:02:19 2021 -0300

    flatpak: Add libadwaita

 build-aux/flatpak/org.gnome.Todo.json | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
---
diff --git a/build-aux/flatpak/org.gnome.Todo.json b/build-aux/flatpak/org.gnome.Todo.json
index b81589df..093e8446 100644
--- a/build-aux/flatpak/org.gnome.Todo.json
+++ b/build-aux/flatpak/org.gnome.Todo.json
@@ -151,6 +151,22 @@
                 }
             ]
         },
+        {
+            "name" : "libadwaita",
+            "buildsystem" : "meson",
+            "config-opts" : [
+                "-Dexamples=false",
+                "-Dtests=false",
+                "-Dvapi=false"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://gitlab.gnome.org/GNOME/libadwaita.git";,
+                    "branch": "main"
+                }
+            ]
+        },
         {
             "name" : "gnome-todo",
             "buildsystem" : "meson",