ci(workflow): add multi-OS matrix for build checks

- Enable builds on ubuntu-latest, windows-latest, macos-latest
- Update job name to reflect matrix OS

Author: NeaByteLab

.github/workflows/ci.yaml

@@ -8,8 +8,11 @@ on:
 
 jobs:
   build-check:
-    name: Build Check
-    runs-on: ubuntu-latest
+    name: Build Check (${{ matrix.os }})
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
 
     steps:
       - name: Checkout code