UI enhancements and Docker dependency management

[PranshuLakhotia]

This PR introduces the following improvements:

UI Enhancements:
Added a dark/light mode toggle with persistent user preferences.
Improved log controls with modern, responsive buttons for refreshing and clearing logs.
Enhanced log filtering by Session ID with dynamic highlighting and search functionality.
Updated the overall UI to be more modern and user-friendly.

Docker Improvements:
Added a requirements.txt file for flexible dependency management.
Ensured reproducibility and easier updates for Python dependencies.

[PranshuLakhotia]

@gtheodoridis @m-vasiloma waiting for your heads up.
Thank You.

[gtheodoridis]

• Why do we need to expose port 5001? Is there a system relying on it?
• Requirements.txt exists, did you mean to fix that the flask_logging_server service installs Flask directly without referencing a requirements.txt file?

[gtheodoridis]

The UI changes look good to me

Issue: The additional port 5001:5000 may introduce unintended exposure of the logserver service. If this is needed, we should document why. Otherwise, we should remove it.

Additionally, flask_logging_server/Dockerfile does not install dependencies from a requirements.txt file. For maintainability, we should consider adding it.

[PranshuLakhotia]

@gtheodoridis yes sir the port change is not needed actually it was just used to run on my local machine will update it soon and I will add a req. txt filr for flask_logging_server/Dockerfile.
Will raise a PR within an hour.