Add IntelliSense binding queue (#73)

* Initial code for binding queue

* Fix-up some of the timeout wait code

* Add some initial test code

* Add missing test file

* Update the binding queue tests

* Add more test coverage and refactor a bit.  Disable reliabile connection until we can fix it..it's holding an open data reader connection.

* A few more test updates

* Initial integrate queue with language service.

* Hook up the connected binding queue into al binding calls.

* Cleanup comments and remove dead code

* More missing comments

* Fix build break.  Reenable ReliabileConnection.

* Revert all changes to SqlConnectionFactory

* Resolve merge conflicts

* Cleanup some more of the timeouts and sync code

* Address code review feedback

* Address more code review feedback

src/Microsoft.SqlTools.ServiceLayer/Connection/ConnectionService.cs

@@ -47,6 +47,18 @@ namespace Microsoft.SqlTools.ServiceLayer.Connection
            
         private Dictionary<string, ConnectionInfo> ownerToConnectionMap = new Dictionary<string, ConnectionInfo>();
 
+        /// <summary>
+        /// Map from script URIs to ConnectionInfo objects
+        /// This is internal for testing access only
+        /// </summary>
+        internal Dictionary<string, ConnectionInfo> OwnerToConnectionMap
+        {
+            get
+            {
+                return this.ownerToConnectionMap;   
+            }
+        }
+
         /// <summary>
         /// Service host object for sending/receiving requests/events.
         /// Internal for testing purposes.