Added Python Script for NetworkX Operations

[axif0]

This PR addresses the task - Issue #5.

The added Python script performs the following operations using NetworkX:

• Creates a NetworkX DiGraph graph object.
• Adds nodes of multiple types (str, int, tuple) to the graph object.
• Adds multiple edges between these nodes.
• Finds and prints the shortest path between all pairs of nodes in the graph.
• Plots the graph using networkx.draw.

Please find the script in the following Colab notebook: NetworkX Operations Colab Notebook

[MridulS]

Thanks!