Added mac and windows to the CI

Author: diyaayay

.github/workflows/nodejs.yml

@@ -9,10 +9,11 @@ on:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
         node-version: [20.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/