Adds cmake build support.

build_cmake.bat

@@ -0,0 +1,18 @@
+@echo off
+:: Helper script to build TinyTest with CMake on Windows
+
+:: Create build directory if it doesn't exist
+if not exist build mkdir build
+cd build
+
+:: Configure with CMake
+echo Configuring with CMake...
+cmake .. %*
+
+:: Build
+echo Building...
+cmake --build . --config Release
+
+echo Build complete!
+echo To run tests: cd build ^&^& ctest -C Release
+echo To install: cd build ^&^& cmake --install . --config Release