Add GitHub Actions to generate API document

.github/workflows/document.yaml

@@ -0,0 +1,33 @@
+name: Publish Document
+
+on:
+  push:
+    tags:
+      - "**"
+    branches:
+      - main
+      - dokka
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: 17
+          distribution: temurin
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
+      - name: Build document with Gradle
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: dokkaHtmlMultiModule
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./build/dokka/htmlMultiModule
+          destination_dir: ./${{ github.ref_name }}/api