wip: Build workflow

Using npm anv v4 workflows

.github/workflows/build.yml

@@ -0,0 +1,19 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - main
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20.x'
+      - name: Install dependencies
+        run: pnpm install
+      - name: Build project
+        run: pnpm build