chore: add Crates.io/Docs.rs badges

Author: AndreiPashkin

README.md

@@ -1,4 +1,6 @@
 ![Build](https://github.com/AndreiPashkin/compose-idents/actions/workflows/build.yml/badge.svg)
+[![Crates.io Version](https://img.shields.io/crates/v/compose-idents)](https://crates.io/crates/compose-idents)
+[![docs.rs](https://img.shields.io/docsrs/compose-idents)](https://docs.rs/compose-idents)
 
 # compose-idents