update PR template

Author: MaxGraey

.github/PULL_REQUEST_TEMPLATE.md

@@ -10,4 +10,28 @@ Changes proposed in this pull request:
 ⯈
 
 - [ ] I've read the contributing guidelines
-- [ ] I've added my name and email to the NOTICE file
+- [ ] I've added my Github name and email to the [NOTICE](https://github.com/AssemblyScript/assemblyscript/blob/main/NOTICE) file
+
+This pull request was prepared with AI assistance?
+
+<details>
+<summary>If yes, complete this additional section</summary>
+
+- [ ] I followed the [Guidelines for AI-assisted contributions](https://github.com/AssemblyScript/assemblyscript/blob/main/CONTRIBUTING.md#guidelines-for-ai-assisted-contributions)
+
+- [ ] AI was used for `Code`
+- [ ] AI was used for `Tests`
+- [ ] AI was used for `Documentation`
+- [ ] AI was used for `PR text` or `Commit text`
+- [ ] Other (describe how it used)
+
+LLM Model:
+<!-- Example:
+  Claude Opus 4.6
+  Claude Sonnet 4.6 Extended Thinkning
+  OpenAI Codex,
+  OpenAI GPT-5.4 Thinking
+  GitHub Copilot
+-->
+
+</details>