Update the landing page for AIAgents4Pharma, and tutorial for the Talk2Competitors

[ansh-info]

Is your feature request related to a problem? Please describe.
The main landing page for AIAgents4Pharma does not have the added description of the newly added Talk2Competitors

The Tutorial Section does not have the output for the Using the Main Agent Cell

Describe the solution you'd like

• We have to just update the readme for in order to reflect the changes for the landing page
• Add the updated jupyter notebook will the output for the respective cell

[gurdeep330]

@ansh-info
This can be a good inspiration:
https://github.com/facebook/react?tab=readme-ov-file

This is another one:
https://github.com/NVIDIA/bionemo-framework
This repo was where Douglas got the inspiration to build the current layout of AIAgents4Pharma (sub-modules)

We also need dedicated emojis for each agent ;-) and an overview chart that makes it easy for users to understand what we're trying to achieve behind the scenes.

What do you think? We can start by addressing the challenges you faced when exploring this repository :-)