ci: Add nightly build

.github/workflows/userscript-nightly.yml

@@ -0,0 +1,56 @@
+name: Publish Userscript Nightly
+
+on:
+  push:
+    branches: [master]
+
+  # Allows you to run this workflow manually from the Actions tab.
+  workflow_dispatch:
+
+jobs:
+  check_date:
+    runs-on: ubuntu-latest
+    name: Check latest commit
+    outputs:
+      should_run: ${{ steps.should_run.outputs.should_run }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: print latest_commit
+        run: echo ${{ github.sha }}
+
+      - id: should_run
+        continue-on-error: true
+        name: check latest commit is less than a day
+        if: ${{ github.event_name == 'schedule' }}
+        run: test -z $(git rev-list  --after="24 hours"  ${{ github.sha }}) && echo "::set-output name=should_run::false"
+
+  nightly:
+    needs: check_date
+    if: ${{ needs.check_date.outputs.should_run != 'false' }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: "Use Node.js 18.x"
+        uses: actions/setup-node@master
+        with:
+          node-version: 18.x
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Build userscript
+        run: yarn userscript:release
+
+      - name: Release nightly
+        uses: marvinpinto/action-automatic-releases@latest
+        with:
+          repo_token: "${{ secrets.GITHUB_TOKEN }}"
+          automatic_release_tag: "nightly"
+          prerelease: true
+          title: "Nightly Build"
+          files: |
+            packages/userscript/bundle/*