feat: rust pointer metadata (#4603)

Author: BD103

draft/2023-08-09-this-week-in-rust.md

@@ -53,6 +53,8 @@ and just ask the editors to select the category.
 * [How to improve Rust compiler’s CI in 2023](https://kobzol.github.io/rust/rustc/2023/07/30/optimizing-rust-ci-2023.html)
 * [video] [Andreas Monitzer  - Bevy-ECS explained - Rust Vienna June 2023](https://www.youtube.com/watch?v=TBjmRmjr4JA)
 
+* [Rust Pointer Metadata](https://bd103.github.io/blog/2023-08-06-ptr-metadata)
+
 ### Rust Walkthroughs
 * [Handling Rust enum variants with kinded crate](https://www.greyblake.com/blog/handling-rust-enum-variants-with-kinded-crate/)
 * [Let's Build a Cargo Compatible Build Tool - Part 1](https://blog.mgattozzi.dev/freight-part-1/)