ci: add build workflow

.github/workflows/build.yml

@@ -0,0 +1,52 @@
+name: build
+
+on:
+  release:
+    types: [published]
+
+jobs:
+
+  release:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        include:
+          - jep-jar-release-url: "https://github.com/ninia/jep/releases/download/v4.2.0/jep-4.2.0.jar"
+            ghidra-release-url: "https://github.com/NationalSecurityAgency/ghidra/releases/download/Ghidra_11.0_build/ghidra_11.0_PUBLIC_20231222.zip"
+    steps:
+    - name: Checkout Ghidrathon
+      uses: actions/checkout@v4
+    - name: Setup Java
+      uses: actions/setup-java@v4
+      with:
+        distribution: "temurin"
+        java-version: "17"
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v3
+      with:
+        gradle-version: "7.3"
+    - name: Configure temp folder
+      run: mkdir ../tmp
+    - name: Download Ghidra
+      run: |
+        wget ${{ matrix.ghidra-release-url }} -O ../tmp/ghidra.zip
+        unzip ../tmp/ghidra.zip -d ../tmp/ghidra
+        mv ../tmp/ghidra/$(ls ../tmp/ghidra) ../tmp/ghidra/ghidra_PUBLIC
+    - name: Download Jep
+      run: wget ${{ matrix.jep-jar-release-url }} -O ./lib/jep-4.2.0.jar
+    - name: Set zip name
+      run: echo "zip_name=Ghidrathon-${GITHUB_REF#refs/tags/}.zip" >> $GITHUB_ENV
+    - name: Build Ghidrathon
+      run: gradle -PGHIDRA_INSTALL_DIR=${{ github.workspace }}/../tmp/ghidra/ghidra_PUBLIC
+    - name: Configure and zip
+      run: |
+        mv ./dist/$(ls ./dist) ./dist/${{ env.zip_name }}
+        cp ./util/* ./dist
+        (cd ./dist && zip -r ../${{ env.zip_name }} .)
+    - name: Upload ${{ env.zip_name }} to GH Release
+      uses: svenstaro/upload-release-action@2728235f7dc9ff598bd86ce3c274b74f802d2208 # v2
+      with:
+        repo_token: ${{ secrets.GITHUB_TOKEN}}
+        file: ${{ env.zip_name }}
+        tag: ${{ github.ref }}