moved track generation and example for overlap

...e/identification/_proto_gen/african_easterly_waves_pb2.py

.../feature/identification/_proto_gen/overlap_example_pb2.py

...ools/feature/identification/_proto_gen/pv_streamer_pb2.py

enstools/feature/identification/_proto_gen/template_pb2.py

...feature/identification/african_easterly_waves/plotting.py

...ure/identification/african_easterly_waves/run_identify.py

enstools/feature/identification/overlap_example/example.py

enstools/feature/tracking/overlap_tracking/tracking.py

enstools/feature/tracking/tracking.py

enstools/feature/util/graph.py