ci: add build workflow

.github/workflows/build.yml

@@ -0,0 +1,33 @@
+name: Build
+
+on: [push, pull_request]
+
+permissions:
+  # Required for Electron Builder to create and update releases on Github
+  contents: write
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+
+    runs-on: ${{ matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+      - name: Install dependencies
+        run: npm ci
+      - name: Build
+        if: ${{ (github.head_ref || github.ref_name) != 'main' }}
+        run: |
+            npm run build -- --x64 --arm64 --publish=never
+      - name: Build and publish
+        if: ${{ (github.head_ref || github.ref_name) == 'main' }}
+        run: |
+          npm run build -- --x64 --arm64
+        env:
+            GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}