Add build prerequisites section to environment.rst

Author: aobolensk

docs/user_guide/environment.rst

@@ -1,6 +1,22 @@
 Set Up Your Environment
 ========================
 
+Build prerequisites
+-------------------
+- **Windows**: Download and install CMake from https://cmake.org/download (select the Windows installer) or install using Chocolatey:
+  .. code-block:: powershell
+     choco install cmake
+
+- **Linux (Ubuntu/Debian)**: Install using package manager:
+  .. code-block:: bash
+     sudo apt update
+     sudo apt install -y cmake
+
+- **macOS**: Install using Homebrew:
+  .. code-block:: bash
+     brew update
+     brew install cmake
+
 Code Style Analysis
 --------------------
 Please follow the `Google C++ Style Guide <https://google.github.io/styleguide/cppguide.html>`_.