dconf permissions to allow gtk-inspector

See #118

flatpak/org.gnome.Fractal.json

@@ -12,6 +12,12 @@
     ],
     "desktop-file-name-prefix" : "(Nightly) ",
     "finish-args" : [
+        /** dconf permission for GtkInspector **/
+        "--filesystem=xdg-run/dconf",
+        "--filesystem=~/.config/dconf:ro",
+        "--talk-name=ca.desrt.dconf",
+        "--env=DCONF_USER_CONFIG_DIR=.config/dconf",
+
         "--share=network",
         "--share=ipc",
         "--socket=x11",
@@ -22,6 +28,7 @@
     ],
     "build-options" : {
         "append-path" : "/usr/lib/sdk/rust-stable/bin",
+        /** Network needed for cargo deps **/
         "build-args" : [
             "--share=network"
         ],