Implement LLM Experiment Integration with Server-Side Functionality

[Tasnim1147]

This PR integrates the provided UI code for the LLM experiment into the project. It also implements the corresponding server-side functionality that returns a hardcoded response to ensure the integration is functioning correctly. This is a checkpoint for verifying the progress of the LLM experiment feature and ensuring that both frontend and backend components are successfully deployed for further development.

Key changes:

Integrated UI code into the existing project structure.
Added server-side functionality to return a hardcoded response.
Ensured the basic integration is functional and ready for further features.

[coveralls]

Pull Request Test Coverage Report for Build 11831084868

Details

• 10 of 10 (100.0%) changed or added relevant lines in 3 files are covered.
• 7 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.008%) to 59.887%

---

Files with Coverage Reduction	New Missed Lines	%
src/meta/errors.js	7	46.51%

Totals
Change from base Build 11805381215:	-0.008%
Covered Lines:	16336
Relevant Lines:	25306

---

💛 - Coveralls

[Tasnim1147]

Here is the sample usage:

[jdufitum]

LGTM