feat: Add Followup Reserach and Update Qr Code (#160)

## Description

Describe your changes in detail (optional if the linked issue already
contains a detailed description of the changes).

## Checklist

Go over all the following points, and put an `x` in all the boxes that
apply.

- [x] I have read the
[CONTRIBUTION](https://github.com/camel-ai/oasis/blob/master/CONTRIBUTING.md)
guide (**required**)
- [ ] I have linked this PR to an issue using the Development section on
the right sidebar or by adding `Fixes #issue-number` in the PR
description (**required**)
- [x] I have checked if any dependencies need to be added or updated in
`pyproject.toml`
- [ ] I have updated the tests accordingly (*required for a bug fix or a
new feature*)
- [ ] I have updated the documentation if needed:
- [ ] I have added examples if this is a new feature

**Note:** If you are developing a new action for `SocialAgent`, please
review the checklist below and mark all applicable items with an `x`. If
you're not adding a new action, you can skip this section.

- [ ] I have added the new action to `ActionType` in
[`typing.py`](https://github.com/camel-ai/oasis/blob/main/oasis/social_platform/typing.py).
- [ ] I have added a corresponding test or a similar function, as shown
in
[`test_user_create_post.py`](https://github.com/camel-ai/oasis/blob/main/test/infra/database/test_user_create_post.py).
- [ ] I have included the new `ActionType` in both
[`test_action_docstring.py`](https://github.com/camel-ai/oasis/blob/main/test/agent/test_action_docstring.py)
and
[`test_twitter_user_agent_all_actions.py`](https://github.com/camel-ai/oasis/blob/main/test/agent/test_twitter_user_agent_all_actions.py).
- [ ] I have documented the new action in
[`actions.mdx`](https://github.com/camel-ai/oasis/blob/main/docs/key_modules/actions.mdx);
the Mintlify GitHub app will deploy the changes automatically.

If you are unsure about any of these, don't hesitate to ask. We are here
to help!

Author: echo-yiyiyi

README.md

@@ -263,6 +263,13 @@ To discover how to create profiles for large-scale users, as well as how to visu
 - OASIS initially released on arXiv - 📆 November 19, 2024
 - OASIS GitHub repository initially launched - 📆 November 19, 2024
 
+## 🔎 Follow-up Research
+
+- [MultiAgent4Collusion](https://github.com/renqibing/MultiAgent4Collusion): multi-agent collusion simulation framework in social systems
+- More to come...
+
+If your research is based on OASIS, we'd be happy to feature your work here—feel free to reach out or submit a pull request to add it to the [README](https://github.com/camel-ai/oasis/blob/main/README.md)!
+
 ## 🥂 Contributing to OASIS🏝️
 
 > We greatly appreciate your interest in contributing to our open-source initiative. To ensure a smooth collaboration and the success of contributions, we adhere to a set of contributing guidelines similar to those established by CAMEL. For a comprehensive understanding of the steps involved in contributing to our project, please refer to the OASIS [contributing guidelines](https://github.com/camel-ai/oasis/blob/master/CONTRIBUTING.md). 🤝🚀