First attempt at a policy for AI/LLM contributions. (#850)

* First attempt at a policy for AI/LLM contributions.

Thanks Calinou, and smallmodel

Co-authored-by: Hugo Locurcio <hugo.locurcio@hugo.pro>

CONTRIBUTING.md

@@ -112,6 +112,48 @@ Check out our issues and pull requests, you can review and make new suggestions.
 
 We also have a label called [new contributor](https://github.com/ioquake/ioq3/issues?q=state%3Aopen%20label%3A%22new%20contributor%22) that might be a good starting point.
 
+## On AI/LLM Contributions
+
+### Policy
+ Do not submit code, pull requests, issues, or other contributions that have been developed with the
+ assistance of generative "AI" or other similar assistive tools (such as Microsoft Copilot, Anthropic
+ Claude, ChatGPT, etc).
+ 
+ **If you submit contributions using these tools, you may be banned from the project.**
+ 
+### Reasoning
+ This policy is here because:
+
+* Code and other contributions made by these tools are likely to violate licenses and copyright
+ because they plagiarize the original sources without permission.
+
+* The datacenters that are used to train and operate these tools have an enormous impact on limited
+ resources of both energy and water.
+
+* Generated code may include security vulnerabilities.
+
+* Making mistakes is human. Generative tools do not have the ability to reason and
+  understand mistakes they make.
+
+* Our time as contributors is valuable and the vast majority of our work is unpaid. When you
+  submit contributions generated by these tools, you waste our resources to review them.
+  This time is much better spent working on contributions from humans.
+
+### Responsibility
+When you submit contributions to the ioquake3 project you are affirming that the contributions are:
+
+* Solely the work of people.
+* Not made with generative "AI" technologies.
+
+**If you fail to abide by these responsibilites you may be banned from the project.**
+
+### What about translation tools, for non-English speakers?
+
+The only acceptable use is with human language translation services for facilitating communication
+between people. Google translate, DeepL, and so on, are acceptable for these uses.
+
+
+
 #### Local development
 
 ioquake3 can be developed locally. For instructions on how to do this, read the README.md.