Add awesome-cmake to Build Systems resources (#1767)

* Initial plan

* Add awesome-cmake to build systems list

Co-authored-by: fffaraz <895678+fffaraz@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: fffaraz <895678+fffaraz@users.noreply.github.com>

Author: Copilot

README.md

@@ -1456,6 +1456,7 @@ A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny
 
 ## Build Systems
 
+* [awesome-cmake](https://github.com/onqtam/awesome-cmake) - A curated list of awesome CMake scripts, modules, and resources.
 * [Bazel](https://bazel.build) - A multi-language, fast and scalable build system from Google. [Apache]
 * [Bear](https://github.com/rizsotto/Bear) - A tool to generate compilation database for clang tooling. [GPLv3]
 * [Buck](https://github.com/facebook/buck) - A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages including C++ developed and used at Facebook. Written in Java. [Apache]