ci: run on Windows

Now that we have wired up support for CMake it is trivial to also
compile the test binary on Windows. Wire this up.

Author: pks-t

Diff for: .github/workflows/ci.yml

@@ -10,9 +10,19 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ ubuntu-latest, macos-latest ]
+        platform:
+          - os: ubuntu-latest
+            generator: Unix Makefiles
+          - os: macos-latest
+            generator: Unix Makefiles
+          - os: windows-latest
+            generator: Visual Studio 17 2022
+          - os: windows-latest
+            generator: MSYS Makefiles
+          - os: windows-latest
+            generator: MinGW Makefiles
 
-    runs-on: ${{ matrix.os }}
+    runs-on: ${{ matrix.platform.os }}
 
     steps:
     - name: Check out
@@ -21,5 +31,5 @@ jobs:
       run: |
         mkdir build
         cd build
-        cmake ..
+        cmake .. -G "${{matrix.platform.generator}}"
         cmake --build .