[Python API] move ngraph python api to the new location (#7364)

* [Python API] Move ngraph python api to the new destination

* fix building tests

* fix code-style checks

* building in azure

* fix building wheels

* apply fixes

.github/dependabot.yml

@@ -4,7 +4,7 @@ version: 2
 updates:
   # Enable version updates for nGraph Python API
   - package-ecosystem: pip
-    directory: "/ngraph/python"
+    directory: "/runtime/bindings/python"
     schedule:
       interval: weekly
       day: monday