WillAyd opened a new pull request, #46216: URL: https://github.com/apache/arrow/pull/46216
### Rationale for this change This clarifies what the subprojects directory does, for developers not familiar with Meson ### What changes are included in this PR? This adds a README.md file to cpp/subprojects ### Are these changes tested? N/A ### Are there any user-facing changes? No -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
