GUI2 Extract Topology view in to its own library

Change-Id: I45597d0902c99b5b3d606966866cc518011c54a0
diff --git a/web/gui2-topo-lib/projects/gui2-topo-tester/src/app/app.component.html b/web/gui2-topo-lib/projects/gui2-topo-tester/src/app/app.component.html
new file mode 100644
index 0000000..9293382
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+++ b/web/gui2-topo-lib/projects/gui2-topo-tester/src/app/app.component.html
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+<!--The content below is only a placeholder and can be replaced.-->
+<div style="text-align:center">
+  <p>ONOS Topology view test application</p>
+</div>
+<onos-topology [bannerHeight]="50"></onos-topology>
+
+