Add AutoGen Studio FE; Backend Adaptation; Heroku Deployment Support

[bonk1t]

1. Frontend Updates:
   • Added AutoGen Studio frontend template code and integrated the new Web UI.
   • Upgraded Node.js, updated frontend packages, and revised UI elements including icons and color scheme.
   • Implemented specific frontend changes like commenting out irrelevant code and adding agencyChart interface and mainAgent field.
2. Backend Updates:
   • Aligned models with AutoGen requirements (changed agent.role to name).
   • Updated AgencyConfig for main_agent, modified agency_chart to include only pairs of agents, implemented validation and covered it with tests (93.61% of diff hit).
   • Introduced mock get_openai_client in tests.
3. Heroku Deployment and Build Scripts:
   • Added and fixed custom Heroku build scripts and a post-build script in package.json for efficient deployment.
4. General and Utility Updates:
   • Updated README.md for better documentation.
   • Made tool files executable to use them as utilities.

Link to check the current state: platform.ainhand.com

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (ced3a54) 70.83% compared to head (3384d53) 71.96%.

Files	Patch %	Lines
nalgonda/custom_tools/build_directory_tree.py	50.00%	1 Missing ⚠️
...gonda/custom_tools/print_all_files_in_directory.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
+ Coverage   70.83%   71.96%   +1.12%     
==========================================
  Files          36       37       +1     
  Lines         768      806      +38     
==========================================
+ Hits          544      580      +36     
- Misses        224      226       +2     

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