Add CONTRIBUTING.md (#58)

Author: thejpster

CONTRIBUTING.md

@@ -0,0 +1,40 @@
+This file is marked [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/).
+
+## AI guidelines
+
+This project does not take contributions substantially or wholly generated by AI.
+
+The definition of a contribution must be taken as very broad.
+It includes the code in PRs, but also the text written in issues and the like.
+
+---
+
+Limited use of AI is permitted in these situations:
+- No artifact generated by an AI is submitted to the repo
+  - For example: You may use an agent to ask questions about the codebase
+  - Though, AI code reviews are not permitted as that would be a wholly AI generated contribution
+- Artifacts inspired by AI are submitted to the project
+  - For example: You may use a chat as rubber duck or to ask for inspiration
+- Artifacts contain small obvious snippets suggested by AI
+  - For example, you may ask an AI something you would otherwise typically use StackOverflow for
+  - But, normal StackOverflow principles apply: make sure the snippet is good and that it doesn't infringe on anyone's copyright
+  - This means very limited use of tab-completion style AI is allowed, though frowned upon
+
+---
+
+These restrictions are there to:
+- keep the project a human project
+  - empathic
+  - inviting
+  - intriguing
+- keep the project maintainable
+  - enjoyable
+  - quality
+- limit the harms of AI, while not shutting the door for some of the useful sides of AI
+- assure the provenance of the project and having no doubts over the copyright status
+
+---
+
+Any person (or bot) not following these guidelines may get muted or banned from the project if said person is deemed to act not in good faith.
+
+These guidelines may evolve over time as the technology and the thinking around it changes.

README.md

@@ -30,6 +30,8 @@ Unless you explicitly state otherwise, any contribution intentionally
 submitted for inclusion in the work by you shall be licensed as above, without
 any additional terms or conditions.
 
+Contributions must be in accordance with the notices in [CONTRIBUTING.md](./CONTRIBUTING.md).
+
 ## Code of Conduct
 
 Contribution to this crate is organized under the terms of the [Rust Code of