tree: Add gsound build dependency

We use gsound for local playback of e.g. ringing sounds.

Signed-off-by: Evangelos Ribeiro Tzaras <devrtz@fortysixandtwo.eu>
Part-of: <https://gitlab.gnome.org/GNOME/calls/-/merge_requests/804>

debian/control

@@ -18,6 +18,7 @@ Build-Depends:
  libfolks-dev,
  libgmobile-dev,
  libgom-1.0-dev,
+ libgsound-dev,
  libgstreamer1.0-dev,
  libgtk-3-dev,
  libgtk-3-doc <!nodoc>,

org.gnome.Calls.json

@@ -268,6 +268,37 @@
                 }
             ]
         },
+        {
+            "name": "libcanberra",
+            "sources": [
+                {
+                    "type": "archive",
+                    "url": "http://0pointer.de/lennart/projects/libcanberra/libcanberra-0.30.tar.xz",
+                    "sha256": "c2b671e67e0c288a69fc33dc1b6f1b534d07882c2aceed37004bf48c601afa72"
+                }
+            ],
+            "config-opts": [
+                "--disable-alsa",
+                "--disable-null",
+                "--disable-oss"
+            ]
+        },
+        {
+            "name": "gsound",
+            "buildsystem": "meson",
+            "sources": [
+                {
+                    "type": "git",
+                    "url": "https://gitlab.gnome.org/GNOME/gsound.git",
+                    "tag": "1.0.3",
+                    "commit": "95d36d60cf53e0e7c5d5325e0f1f4fc765a611ae"
+                }
+            ],
+            "config-opts": [
+                "-Dintrospection=false",
+                "-Denable_vala=false"
+            ]
+        },
         {
             "name": "callaudiod",
             "buildsystem": "meson",