[ONOS-6375] Add skeleton code for Web GUI of mapping management app

Change-Id: I95079e6ac422591e6d5afed59b97d2a248573770
diff --git a/apps/mappingmanagement/web/src/main/resources/gui/js.html b/apps/mappingmanagement/web/src/main/resources/gui/js.html
new file mode 100644
index 0000000..23df18f
--- /dev/null
+++ b/apps/mappingmanagement/web/src/main/resources/gui/js.html
@@ -0,0 +1 @@
+<script src="app/view/mapping/mapping.js"></script>
\ No newline at end of file