Added BrowsingAgent and modified agency communication flows

Adding .env file to agent_workdir

Adding test_tasks.py for testing/evaluating CodeGents.

Fixing req_analyst_instructions variable name.

Added SearchWeb tool to sys_designer and sys_architect.

Removed unused imports.

Adding test tasks for CodeGents testing/evaluation.

Revised Coders.py and added new agency agents.

Modified and added CodeGents.

Modified and enhanced tests, helpers, scripts for file and assistant endpoints.

Updating some project-level files/documents.

Adding scripts, tests, and helper functions for openai file/assistant endpoints.

Added CodeGents and additional files to base agent_workdir template

Minor cleaning up DataGents

Recongifured vs code files and adding code-workspace