Add Gradle caching to CI workflows

Author: NonSwag

.github/workflows/build.yml

@@ -13,6 +13,18 @@ jobs:
           java-version: 21
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v5
+        with:
+          cache-read-only: ${{ github.ref != 'refs/heads/main' }}
+      - name: Cache Gradle Build Cache
+        uses: actions/cache@v5
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+            .gradle
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
       - name: Cache Hytale Server
         uses: actions/cache@v5
         with:

.github/workflows/maven-publish.yml

@@ -15,6 +15,18 @@ jobs:
           java-version: 21
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v5
+        with:
+          cache-read-only: ${{ github.ref != 'refs/heads/main' }}
+      - name: Cache Gradle Build Cache
+        uses: actions/cache@v5
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+            .gradle
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
       - name: Cache Hytale Server
         uses: actions/cache@v5
         with: