Added github workflow for building and testing

Author: astonbitecode

.github/workflows/ci-workflow.yml

@@ -0,0 +1,30 @@
+name: j4rs CI
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, macos-latest, windows-latest ]
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'adopt'
+      - name: Build Rust with Cargo
+        run: cargo build --verbose
+      - name: Test Rust with Cargo
+        run: cargo test --verbose -- --nocapture