feat: network cleaning simplifying functions PR(#322) - Issue 144

* feat: snapping nodes to edges and Osmnx_wrapper created

* chore: Removed unrequired wrapper

* chore: changes to snap_node_to_edge and osm_util function

* chore: changes to snap_node_to_edge and _is_end_point function

* chore: changes to snap_node_to_edge, break_edge function created. Not completed

* chore: snap_nodes_to_edges completed. Relevant tests remain

* chore: import osm_utils updated

* chore: review remarks addressed.

* chore/test: test added + function modified for get the expected results

* chore: minor function update

* chore: test fixture fixed and extra example data deleted

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Co-authored-by: sahand_asgarpour <[email protected]>
Co-authored-by: Carles S. Soriano Perez <[email protected]>
Co-authored-by: Sahand Asgarpour <[email protected]>