Added a build github workflow that will automatically build the project when there is a commit or PR

Author: Sphesihlebjamile

.github/workflows/build.yml

@@ -0,0 +1,27 @@
+name: Java CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "**" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 26
+        uses: actions/setup-java@v4
+        with:
+          java-version: '26'
+          distribution: 'temurin'
+
+      - name: Create output directory
+        run: mkdir -p out
+
+      - name: Compile Java sources
+        run: javac -d out $(find src -name "*.java")