Add papers from Zhong et al.

[zfw1226]

This PR adds the following papers:

1. Richelieu: Self-Evolving LLM-Based Agents for AI Diplomacy (NeurIPS 2024) - Communication Games

   • Paper: https://openreview.net/pdf?id=7Jb4NJS8Yk
   • Project: https://sites.google.com/view/richelieu-diplomacy

2. Simulating Human-like Daily Activities with Desire-driven Autonomy (ICLR 2025) - Human/social Simulation

   • Paper: https://arxiv.org/abs/2412.06435
   • Project: https://sites.google.com/view/desire-driven-autonomy
   • Code: https://github.com/zfw1226/D2A

3. UnrealZoo: Enriching Photo-realistic Virtual Worlds for Embodied AI (ICCV 2025) - Benchmark

   • Paper: https://arxiv.org/abs/2412.20977
   • Project: http://unrealzoo.site/
   • Code: https://github.com/UnrealZoo/unrealzoo-gym

4. CoMet: Metaphor-Driven Covert Communication for Multi-Agent Language Games (ACL 2025) - Communication Games

   • Paper: https://www.arxiv.org/abs/2505.18218
   • Code: https://github.com/Yeswolo/CoMet

5. Is Your LLM Really Mastering the Concept? A Multi-Agent Benchmark (arXiv 2025) - Benchmark

   • Paper: https://arxiv.org/pdf/2505.17512
   • Project: https://ck-arena.site/