server.New signature changes and test fixes. (#324)

* ctx middleware should always be the first added to router

* plugable enqueue func, changed server.New signature

* fix tests

* remove ctx/ctx.Done from server

api/server/runner.go

@@ -176,8 +176,9 @@ func (s *Server) handleRequest(c *gin.Context, enqueue models.Enqueue) {
 		task.EnvVars = cfg.Env
 		task.Payload = string(pl)
 		// Push to queue
-		enqueue(task)
+		enqueue(ctx, s.MQ, task)
 		log.Info("Added new task to queue")
+		c.JSON(http.StatusAccepted, map[string]string{"call_id": task.ID})
 
 	default: