[Add] AI reddit manager

[harshit-lyzr]

• Introduction of Streamlit Applications: Added two Streamlit applications, one for managing Twitter queries and another for Reddit queries, both utilizing the Lyzr API and OpenAI.
• User Interface Enhancements: Implemented a user-friendly interface with a two-column layout for input and output, improving the overall user experience.
• Environment Configuration: Introduced .env files for securely storing sensitive API keys, ensuring better security practices.
• Documentation Updates: Enhanced README files for both applications, providing clear instructions on features, prerequisites, installation, and usage.
• New Dependencies: Added streamlit and python-dotenv to the requirements, ensuring all necessary packages are included for functionality.
• Code Structure: Organized the code into separate files for better maintainability, including app.py for application logic and lyzr_agent.py for API interactions.