[epiphany] flatpak: Add libhandy

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 1a00b21daffcf8be75e16aa76990f731665f6628
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Tue Nov 27 06:41:11 2018 +0100

    flatpak: Add libhandy
    
    This is needed as it is going to be used in the following commits.

 org.gnome.Epiphany.json | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
---
diff --git a/org.gnome.Epiphany.json b/org.gnome.Epiphany.json
index 712ce68f1..d7a1fb90a 100644
--- a/org.gnome.Epiphany.json
+++ b/org.gnome.Epiphany.json
@@ -58,6 +58,23 @@
                 }
             ]
         },
+        {
+            "name" : "libhandy",
+            "buildsystem" : "meson",
+            "config-opts" : [
+                "-Dexamples=false",
+                "-Dglade_catalog=false",
+                "-Dintrospection=false",
+                "-Dtests=false",
+                "-Dvapi=false"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://source.puri.sm/Librem5/libhandy.git";
+                }
+            ]
+        },
         {
             "name" : "epiphany",
             "config-opts" : [