[gnome-screenshot: 1/2] Add flatpak manifest to build from master

[Cosimo Cecchi <cosimoc src gnome org>]

commit 9694f10512b6cb1b5c6d0d8053a5507793f971ee
Author: Bilal Elmoussaoui <bil elmoussaoui gmail com>
Date:   Tue Sep 18 20:36:21 2018 +0000

    Add flatpak manifest to build from master

 org.gnome.Screenshot.json | 58 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
---
diff --git a/org.gnome.Screenshot.json b/org.gnome.Screenshot.json
new file mode 100644
index 0000000..173c18a
--- /dev/null
+++ b/org.gnome.Screenshot.json
@@ -0,0 +1,58 @@
+{
+    "app-id": "org.gnome.Screenshot",
+    "runtime": "org.gnome.Platform",
+    "runtime-version": "master",
+    "sdk": "org.gnome.Sdk",
+    "command": "gnome-screenshot",
+    "finish-args": [
+       "--share=ipc",
+       "--socket=x11",
+       "--socket=wayland",
+       "--talk-name=org.gnome.Shell.Screenshot",
+       "--filesystem=xdg-run/dconf",
+       "--filesystem=~/.config/dconf:ro",
+       "--talk-name=ca.desrt.dconf",
+       "--env=DCONF_USER_CONFIG_DIR=.config/dconf"
+    ],
+    "cleanup": [
+       "/include",
+       "/lib/pkgconfig",
+       "/share/pkgconfig",
+       "/share/aclocal",
+       "/man",
+       "/share/man",
+       "/share/gtk-doc",
+       "/share/vala",
+       "*.la",
+       "*.a"
+    ],
+    "modules": [
+       {
+           "name": "libcanberra-gtk3",
+           "cleanup": [
+               "/bin",
+               "/lib/gnome-settings-daemon-3.0",
+               "/share/doc",
+               "/share/gdm",
+               "/share/gnome"
+           ],
+           "sources": [
+               {
+                   "type": "archive",
+                   "url": "http://0pointer.de/lennart/projects/libcanberra/libcanberra-0.30.tar.xz";,
+                   "sha256": "c2b671e67e0c288a69fc33dc1b6f1b534d07882c2aceed37004bf48c601afa72"
+               }
+           ]
+       },
+       {
+           "name": "gnome-screenshot",
+           "buildsystem": "meson",
+           "sources": [
+               {
+                   "type": "git",
+                   "url": "https://gitlab.gnome.org/GNOME/gnome-screenshot.git";
+               }
+           ]
+       }
+    ]
+}