Add more graph algorithms

[DEBADRIBASAK]

The graph section of this repository does not contain some well known algorithms like Kruskal's algo, Floyd-Warshall algo etc. Add more number of examples from graphs.

Please assign this issue to me. Algorithms I will add:

1. Kruskal
2. Floyd Warshall

[ayushjindal23]

I know these algorithms and worked on python before. Could you assign them to me?

[ayushjindal23]

And should I create a branch or directly merge it.??

[tianyizheng02]

The file basic_graphs.py already has methods for both Kruskal's and Floyd Warshall named krusk and floy, respectively

[Nivig1310]

Hello, can I add Brent's algorithm?

[harshithakolipaka]

hello, I would like to add the Bellmen Fords algorithm to this repository. Can you please assign this issue to me