VS Code CMake Helper: first implementation (#1)

CMake the way CLion does it (profiles and presets, targets, run and debug
configurations, CTest)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Tomáš Černík <Tom.cernik@gmail.com>
Reviewed-on: #1

media/cmake.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linejoin="round"><path d="M12 2 2 21h20L12 2Z"/><path d="M12 2v13l10 6"/><path d="M12 15 2 21"/></svg>