gnu: dino: Add missing inputs.

These new inputs are referenced by the package but was missing in
the package definition. Some of these inputs might have been used
by the package indirectly via propagation from other inputs.

* gnu/packages/messaging.scm (dino)[native-inputs]: Add gobject-introspection.
[inputs]: Add atk, cairo, gdk-pixbug+svg, libnice and pango.

gnu/packages/messaging.scm

@@ -1247,19 +1247,25 @@ Encryption to Gajim.")
     (native-inputs
      `(("gettext" ,gettext-minimal)
        ("glib:bin" ,glib "bin")
+       ("gobject-introspection" ,gobject-introspection)
        ("gtk+:bin" ,gtk+ "bin")
        ("pkg-config" ,pkg-config)
        ("vala" ,vala)))
     (inputs
-     `(("glib" ,glib)
+     `(("atk" ,atk)
+       ("cairo" ,cairo)
+       ("gdk-pixbuf" ,gdk-pixbuf+svg)
+       ("glib" ,glib)
        ("glib-networking" ,glib-networking)
        ("gpgme" ,gpgme)
        ("gsettings-desktop-schemas" ,gsettings-desktop-schemas)
        ("gtk+" ,gtk+)
        ("libgcrypt" ,libgcrypt)
        ("libgee" ,libgee)
+       ("libnice" ,libnice)
        ("libsignal-protocol-c" ,libsignal-protocol-c)
        ("libsoup" ,libsoup)
+       ("pango" ,pango)
        ("qrencode" ,qrencode)
        ("sqlite" ,sqlite)))
     (synopsis "Graphical Jabber/XMPP Client using GTK+/Vala")