- setup github actions.

- update documentations for v4.0 release (NOT YET RELEASED!!).

Author: smith8h

.github/workflows/build.yml

@@ -0,0 +1,30 @@
+name: Build and Test
+
+on:
+  push:
+    branches: [ "main" ]
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    branches: [ "main" ]
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+          cache: gradle
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Build with Gradle
+        run: ./gradlew build