add github CI

.github/workflows/build.yml

@@ -0,0 +1,22 @@
+name: Gradle build
+
+on:
+  push:
+    branches: [ dev, master ]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v3.5.3
+      - name: Set up JDK 11
+        uses: actions/setup-java@v3.12.0
+        with:
+          java-version: 11
+          distribution: liberica
+      - name: execute build
+        uses: gradle/gradle-build-action@v2.7.1
+        with:
+          arguments: build

.github/workflows/pages.yml

@@ -0,0 +1,25 @@
+name: Dokka publication
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 40
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2.5.0
+        with:
+          java-version: 11
+          distribution: liberica
+      - name: execute build
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: dokkaHtmlMultiModule
+      - uses: JamesIves/github-pages-deploy-action@4.1.0
+        with:
+          branch: gh-pages
+          folder: build/dokka/htmlMultiModule

.github/workflows/publish.yml

@@ -0,0 +1,27 @@
+name: Gradle publish
+
+on:
+  workflow_dispatch:
+  release:
+    types: [ created ]
+
+jobs:
+  publish:
+    environment:
+      name: publish
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2.5.0
+        with:
+          java-version: 11
+          distribution: liberica
+      - name: execute build
+        uses: gradle/gradle-build-action@v2
+      - name: Publish
+        shell: bash
+        run: >
+          ./gradlew release --no-daemon --build-cache -Ppublishing.enabled=true
+          -Ppublishing.space.user=${{ secrets.SPACE_APP_ID }}
+          -Ppublishing.space.token=${{ secrets.SPACE_APP_SECRET }}