[Feature] CMake Language Services - Full Colorization Support

### Request Overview

Fully support colorization CMake language support, including all built-in variables, properties, unquoted arguments, and full support of the syntax defined here: https://cmake.org/cmake/help/latest/manual/cmake-language.7.html

### Additional Information

_No response_

Start by reading the linked CMake language specification and locating the repository’s current CMake colorization or language-service entry point; the issue names no file or test. Done means colorization supports all built-in variables, properties, unquoted arguments, and the syntax defined by the referenced specification.

Written by the indexing model from the issue text.