feat: windows support

Author: Himenon

.github/workflows/build.yml

@@ -5,11 +5,12 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         node-version: [12.x]
+        os: [windows-latest, ubuntu-latest]
 
     steps:
       - uses: actions/checkout@v2