Enable FSLinalg tests and demos in CMake config

Enable building tests and demos for FSLinalg.

Author: alexandrehoffmann

.github/workflows/cmake-multi-platform.yml

@@ -65,6 +65,8 @@ jobs:
                 -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} \
                 -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} \
                 -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
+                -DFSLinalg_BUILD_TESTS=ON \
+                -DFSLinalg_BUILD_DEMO=ON \
                 -G Ninja
 
       - name: Configure CMake (Windows)
@@ -75,6 +77,8 @@ jobs:
               -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} `
               -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} `
               -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
+              -DFSLinalg_BUILD_TESTS=ON 
+              -DFSLinalg_BUILD_DEMO=ON
 
       # --- Build ---
       - name: Build (Linux)