polystat#184: added plugins for maven

.github/workflows/maven-build.yml

@@ -0,0 +1,29 @@
+name: mvn
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+jobs:
+  test:
+    name: Tests
+    strategy:
+      matrix:
+        os: [ubuntu-20.04, windows-2022, macos-12]
+        java: [11, 17]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: ${{ matrix.java }}
+      - uses: actions/cache@v3
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-jdk-${{ matrix.java }}-maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-jdk-${{ matrix.java }}-maven-
+      - run: mvn clean install

.gitignore

@@ -22,4 +22,8 @@ j2eo-data
 gradlew
 gradlew.bat
 gradle
-target
+target
+.classpath
+.project
+.settings/
+ktlint