Remove Travis-CI, add GH Actions

Author: kinow

.github/workflows/maven.yml

@@ -0,0 +1,34 @@
+name: Java CI
+
+on:
+  push:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ matrix.experimental }}
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, windows-latest ]
+        java: [ 8, 11 ]
+        experimental: [ false ]
+#        include:
+#          - java: 18-ea
+#            os: ubuntu-latest
+#            experimental: true
+
+    steps:
+      - uses: actions/checkout@v3.3.0
+        with:
+          persist-credentials: false
+      - name: Set up JDK ${{ matrix.java }}
+        uses: actions/setup-java@v3.10.0
+        with:
+          distribution: 'temurin'
+          java-version: ${{ matrix.java }}
+      - name: Build with Maven
+        run: mvn -V --no-transfer-progress clean test