Create Build Setup Action

.github/actions/build_setup/action.yml

@@ -0,0 +1,30 @@
+name: Build Setup
+description: Setup for standard Java builds
+
+inputs:
+  update-cache:
+    description: If cache should be updated
+    required: false
+    default: false
+
+runs:
+  using: 'composite'
+
+  steps:
+  - name: Set up JDK 17
+    uses: actions/setup-java@v4
+    with:
+      distribution: zulu
+      java-version: 17
+
+  - name: Setup Gradle
+    uses: gradle/gradle-build-action@v2
+    with:
+      cache-write-only: ${{ inputs.update-cache }}
+      generate-job-summary: false
+      gradle-home-cache-includes: |
+        caches
+        caches/retro_futura_gradle
+        notifications
+        jdks
+        wrapper