chore: add CODEOWNERS file for repository

Driving-Agent: aygp-dr
LLM-Agent: claude-code
LLM-Model: claude-3-7-sonnet-20250219
Reviewed-by: jwalsh
Session-id: SESSION-20250323-jwalsh-KLN7

Author: aygp-dr

.github/CODEOWNERS.md

@@ -0,0 +1,13 @@
+# These owners will be the default owners for everything in the repo
+* @jwalsh @kkumar30 @daidaitaotao
+
+# Core system implementation
+/src/legal_rag.org @kkumar30 @jwalsh
+
+# Documentation
+/docs/ @jwalsh @daidaitaotao
+/README.org @jwalsh
+
+# Tests and CI
+/tests/ @daidaitaotao
+/.github/ @aygp-dr