ci: add sync workflows

.github/workflows/sync.yml

@@ -0,0 +1,63 @@
+name: Sync Hitokoto Sentences
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Get latest tag from sentences-bundle repository
+      id: get_tag
+      run: |
+        TAG=$(git ls-remote --tags https://github.com/hitokoto-osc/sentences-bundle.git | awk '{print $2}' | grep -E '^refs/tags/v[0-9]+\.[0-9]+\.[0-9]+$' | sort -V | tail -n 1 | cut -d '/' -f 3)
+        echo "Latest tag is $TAG"
+        echo "TAG=$TAG" >> $GITHUB_OUTPUT
+
+    - name: Check npm package version
+      id: check_version
+      run: |
+        PACKAGE_NAME="koishi-plugin-hitokoto-sentences"
+        TAG=${{ steps.get_tag.outputs.tag }}
+        VERSIONS=$(npm show $PACKAGE_NAME versions)
+        if echo "$VERSIONS" | grep -q "$TAG"; then
+          echo "Version $TAG of $PACKAGE_NAME already exists, exiting."
+          echo "result=exists" >> $GITHUB_OUTPUT
+        else
+          echo "Version $TAG of $PACKAGE_NAME does not exist, proceeding."
+        fi
+
+    - name: Clone sentences-bundle repository
+      if: steps.check_version.outputs.result != 'exists'
+      run: |
+        TAG=${{ steps.get_tag.outputs.tag }}
+        git clone --branch $TAG --single-branch https://github.com/hitokoto-osc/sentences-bundle.git sentences-bundle
+
+    - name: Copy JSON files
+      if: steps.check_version.outputs.result != 'exists'
+      run: |
+        cp sentences-bundle/sentences/*.json data/
+
+    - name: Update package.json version
+      if: steps.check_version.outputs.result != 'exists'
+      run: |
+        TAG=${{ steps.get_tag.outputs.tag }}
+        PTAG=${TAG#v} # Remove the first 'v' from TAG
+        sed -i "s/\"version\": \".*\"/\"version\": \"$PTAG\"/" package.json
+
+    - name: Publish to npm
+      if: steps.check_version.outputs.result != 'exists'
+      run: |
+        npm publish --dry-run
+
+      env:
+        NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}