ringd: adds account adding as a task handler request option

- adds AddRingAccount and AddSIPAccount as task request options
  so accounts can be created from outside ringd's thread

Change-Id: Idcdd54ce5533779a49338e34515381a300782163
Tuleap: #986
diff --git a/RingD.h b/RingD.h
index 366ea2e..5aaaa30 100644
--- a/RingD.h
+++ b/RingD.h
@@ -68,9 +68,15 @@
 

 private:

     /* sub classes */

-    enum class Request { None };

+    enum class Request {

+        None,

+        AddRingAccount,

+        AddSIPAccount

+    };

     ref class Task

     {

+    internal:

+        Task(Request r) { request = r; }

     public:

         property Request request;

     };