Facebook Messanger data loader integration

[Shailesh-05]

Description

Summary of the Change
Added a new feature that integrates a Facebook Messenger chat loader for importing and processing chat data from .json files. This loader allows easy ingestion of Facebook chat data into the system.

Motivation and Context
The existing system supports WhatsApp chats and Twitter tweets, but many users also export and analyze Facebook Messenger conversations. This new feature allows users to easily load and process Facebook Messenger chat data, expanding the platform’s capabilities and supporting more diverse use cases.

Dependencies
No new external dependencies are required for this change. The loader uses the Python json module, which is part of the standard library.

Did I fill in the tool.llamahub section in the pyproject.toml and provide a detailed README.md for my new integration or package?

• Yes

Type of Change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Added new notebook (that tests end-to-end)
• I stared at the code and made sure it makes sense

Suggested Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings

[masci]

Before we review, can you fix the tests? Thanks in advance!