added dummy jenkins file

Jenkins/Phabricator-pipeline/Jenkinsfile

@@ -0,0 +1,35 @@
+// Copyright 2019 Google LLC
+//
+// Licensed under the the Apache License v2.0 with LLVM Exceptions (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://llvm.org/LICENSE.txt
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pipeline {
+    agent any
+
+    stages {
+        stage('Build') {
+            steps {
+                echo 'Building..'
+            }
+        }
+        stage('Test') {
+            steps {
+                echo 'Testing..'
+            }
+        }
+        stage('Deploy') {
+            steps {
+                echo 'Deploying....'
+            }
+        }
+    }
+}