Add OpenDeepResearcher implementation by SRI-KRISHNA-PRIYA-S

[Srikrishnapriya08]

Summary
This pull request adds my implementation of the OpenDeepResearcher Agentic LLM Research FrameworkKey Features

• Added core modules: planner.py, search.py, writer.py, app.py, utils.py
• Integrated workflow for planning, searching, and writing research content
• Included requirements.txt for environment setup
• All changes are contained within the SRI-KRISHNA-PRIYA-S branch, without modifying the original agent modules (planner_agent, searcher_agent, writer_agent)

Notes

• This implementation can run alongside the original framework without breaking existing functionality
• Designed for clarity, modularity, and easy integration with the original code
• Tested locally and ready for review

Please review and let me know if any modifications or improvements are needed.