ci: docs workflow

Author: tale

.github/workflows/docs.yml

@@ -0,0 +1,43 @@
+name: Docs
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - lua/rootbeer/**
+      - docs/**
+      - scripts/lua2md.ts
+      - .vitepress/**
+      - package.json
+      - pnpm-lock.yaml
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deploy.outputs.page_url }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install mise
+        uses: jdx/mise-action@v2
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Generate docs & build
+        run: pnpm build
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: .vitepress/dist
+
+      - name: Deploy to GitHub Pages
+        id: deploy
+        uses: actions/deploy-pages@v4