Add graph visualization feature

[satyyam11]

This pull request addresses issue #1592 by introducing a new graph visualization feature to the project.
The changes include a new graph_visualizer.py file with a function to visualize scenario configuration graphs using networkx and matplotlib.
Additionally, the config/init.py file was updated to load the configuration and call the visualization function. This enhancement provides a visual representation of nodes and edges in the configuration, making it easier to understand and debug complex scenarios.
Dependencies for networkx and matplotlib are required, which can be installed via pip. Please review and merge this PR to integrate the new feature into the project.

[jrobinAV]

The requirements are not satisfied.

In the ScenarioConfig class, we want a new method named draw() that exports the scenario configuration graph as an image file.

The graph comprises the input DataNodeConfigs, the output DataNodeConfigs, and the TaskConfigs as nodes.
A directed edge exists from a DatanodeConfig node to a TaskConfig node if and only if the DatanodeConfig is a TaskConfig's input.
A directed edge exists from a TaskConfig node to a DatanodeConfig node if and only if the DatanodeConfig is a TaskConfig input.

If a new package is required, it must be made optional. The draw function should check the presence of the package before using it. If the package is not installed, the draw function should log a warning message and return doing nothing else.

[jrobinAV]

Several remarks:

• The main code should not be committed.
• The ScenarioConfig class already exists. You should use it.
• The creation of the graph is not integrated with Taipy. The graph already exists as a set of task configs. It must be converted into a networkx DAG. A dedicated method could be exposed in the ScenarioConfig class for building the dag as a nx object.
• The feature should be generic. In particular, the size of the graph may vary a lot.
• Many unit tests are expected in this PR. Several use cases must be tested with various graph sizes and shapes.
• No print is allowed. Please use a Taipy Logger.
• The pictures should not be committed.

[jrobinAV]

This must be an optional dependency. Please verify it is installed before using it.

[jrobinAV]

We already have a Scenario Config class that already contains a DAG. It must be re-used.
The purpose is to add a draw method to this class.

[jrobinAV]

@satyyam11 any news? Do my comments make sense to you?

[Manideep-Maddileti]

i want to work on this issue please assig to me @jrobinAV

[jrobinAV]

@Manideep-Maddileti This is a Pull request. Please feel free to contribute by reviewing the code, and add any comment.

If you want, you can also be assigned to the related issue #1592 and propose your own Pull Request.