Bi directional dijkstra (#7982)

* Added Bi-Directional Dijkstra

* Added Bi-Directional Dijkstra

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* Added doctest and type hints

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* Rename Bi_directional_Dijkstra.py to bi_directional_dijkstra.py

* Update bi_directional_dijkstra.py

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* Update bi_directional_dijkstra.py

* Update bi_directional_dijkstra.py

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* Update bi_directional_dijkstra.py

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* Update bi_directional_dijkstra.py

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* Update bi_directional_dijkstra.py

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* Update bi_directional_dijkstra.py

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* Update bi_directional_dijkstra.py

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* Update bi_directional_dijkstra.py

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* Update bi_directional_dijkstra.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* Update bi_directional_dijkstra.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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