ci: add module zip build workflow

Author: SayanthRock

.github/workflows/build-module.yml

@@ -0,0 +1,31 @@
+name: Build Theme Module
+
+on:
+  push:
+    branches: [ main ]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build module ZIP
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install zip
+        run: sudo apt-get update && sudo apt-get install -y zip
+
+      - name: Package module
+        run: bash scripts/package.sh
+
+      - name: Upload module artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ColorOS-Themes-Rock
+          path: dist/*.zip
+          if-no-files-found: error