INT app gui2

This patch contains the files needed by the INT app to work with gui2.
More in detail I reuse/modifie the html and the css, already provided in
the inbandtelemetry folder. I add the file needed to utilize the gui2,
e.g,intapp-gui2-lib.module.ts.

Link to my dropbox for screenshots: 
https://www.dropbox.com/sh/ie2l0flcm8igesk/AAAsP2RdMbNbnt6A88lmBczaa?dl=0

Change-Id: I710c09f3a04a139a4482bb7aae3b3b76b39e67e6
diff --git a/apps/inbandtelemetry/intApp-gui2/intApp/public_api.ts b/apps/inbandtelemetry/intApp-gui2/intApp/public_api.ts
new file mode 100644
index 0000000..7b8fc29
--- /dev/null
+++ b/apps/inbandtelemetry/intApp-gui2/intApp/public_api.ts
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 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.
+ */
+
+/*
+ * Public API Surface of intApp-gui2-lib
+ */
+
+export * from './lib/intapp-gui2-lib.module';
+export * from './lib/intapp/intapp.component';