Update SUMMARY.md with new files under 'Looking for a home'

Author: devops-talus

SUMMARY.md

@@ -70,3 +70,8 @@
   * [LLM: OpenAI Chat Completion](tools/llm-openai-chat-completion/README.md)
   * [Social : X](tools/social-twitter/README.md)
   * [Storage: Walrus](tools/storage-walrus/README.md)
+
+## Looking for a home
+
+* [CODE_OF_CONDUCT.md](CODE_OF_CONDUCT.md)
+* [CONTRIBUTING.md](CONTRIBUTING.md)