Christian's Q1 2024 Update

https://cppalliance.org/christian/2024/04/20/ChristiansQ1Update.html

CI for Boost.Buffers and Boost.Http.Proto was built with in‑house cpp‑actions; automated matrix creation proved cumbersome, so manual input control was used, easing workflow. Container types and serialization progressed, with next quarter focused on C++dev.