use github-actions for automated builds (#7)

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: maven
+    directory: "/"
+    schedule:
+      interval: daily

.github/workflows/build.yml

@@ -0,0 +1,35 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - 'main'
+      - 'release/**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: '17'
+      - name: Maven build
+        env:
+          OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
+          OSSRH_TOKEN: ${{ secrets.OSSRH_TOKEN }}
+          GPG_KEY_NAME: ${{ secrets.GPG_KEY_NAME }}
+          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          MAVEN_SIGNING_KEY: ${{ secrets.MAVEN_SIGNING_KEY }}
+        run: |
+          echo "$MAVEN_SIGNING_KEY" > MAVEN_SIGNING_KEY_FILE.base64
+          base64 --decode MAVEN_SIGNING_KEY_FILE.base64 > MAVEN_SIGNING_KEY_FILE.bin
+          gpg --batch --fast-import MAVEN_SIGNING_KEY_FILE.bin
+          ./mvnw deploy -s cd/settings.xml -P sign
+      - name: Sonar
+        env:
+          SONAR_TOKEN: ${{ secrets.SONARCLOUD_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          ./mvnw org.jacoco:jacoco-maven-plugin:prepare-agent org.apache.maven.plugins:maven-surefire-plugin:test org.sonarsource.scanner.maven:sonar-maven-plugin:sonar

.github/workflows/matrix-testing.yml

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+name: Matrix Testing
+
+on:
+  push:
+    branches:
+      - '**'
+
+jobs:
+  matrix-testing:
+    strategy:
+      fail-fast: false
+      matrix:
+        maven: [ 3.5.2, 3.9.6, 4.0.0-alpha-13]
+        os: [ ubuntu-latest, windows-latest ]
+        java: [11, 17, 21]
+        exclude:
+          - java: 11
+            maven: 4.0.0-alpha-13
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: '${{ matrix.java }}'
+      - uses: stCarolas/[email protected]
+        with:
+          maven-version: '${{ matrix.maven }}'
+      - name: Maven verify
+        run: mvn -B verify

.github/workflows/pull-request.yml

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+name: Pull Request CI
+
+on: [pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-java@v3
+      with:
+        distribution: 'temurin'
+        java-version: '17'
+    - name: Maven build
+      run: ./mvnw -B install

.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.5.2/apache-maven-3.5.2-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar