Add: Generate AGENTS.md for Codex in dlt

Closes #220

Author: github-actions[bot]

_questions/data-engineering-zoomcamp/workshop-1-dlthub/020_7b3f0193ec_codex-dlt-agents.md

@@ -0,0 +1,19 @@
+---
+id: 7b3f0193ec
+question: How do I generate the AGENTS.md file for Codex in dlt?
+sort_order: 20
+---
+
+To generate the AGENTS.md file for Codex in dlt, follow these steps:
+
+1. Open a terminal and run:
+
+```bash
+dlt ai setup codex
+```
+
+2. The command currently generates a file named `AGENT.md`. Since Codex looks for `AGENTS.md` (plural) by default, rename it:
+
+```bash
+mv AGENT.md AGENTS.md
+```