Add CI

.github/workflows/build.yml

@@ -0,0 +1,42 @@
+name: Build & Release
+
+on:
+  push:
+    branches:
+      - master
+
+permissions:
+  contents: write
+
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 25
+          cache: maven
+
+      - name: Build with Maven
+        run: mvn -B clean package
+
+      - name: Set release tag to current datetime
+        id: datetime
+        run: |
+          TAG_NAME="release-$(date -u '+%Y%m%d%H%M%S')"
+          echo "TAG_NAME=$TAG_NAME" >> $GITHUB_OUTPUT
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ steps.datetime.outputs.TAG_NAME }}
+          name: Release ${{ steps.datetime.outputs.TAG_NAME }}
+          files: target/inventory-tools.jar
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}