Adds github actions.

.github/workflows/gradle.yml

@@ -2,9 +2,10 @@ name: Java CI with Gradle
 
 on:
   push:
-    branches: [ "develop" ]
+    branches: [ "main", "develop" ]
+    tags: [ "v*" ]
   pull_request:
-    branches: [ "develop" ]
+    branches: [ "main", "develop" ]
 
 jobs:
   build:
@@ -14,6 +15,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
 
       - name: Set up JDK 25
         uses: actions/setup-java@v6
@@ -25,7 +28,7 @@ jobs:
         uses: gradle/actions/setup-gradle@v5
         with:
           gradle-version: '9.8.0'
-          cache-read-only: ${{ github.ref != 'refs/heads/develop' }}
+          cache-read-only: ${{ github.ref != 'refs/heads/develop' && github.ref != 'refs/heads/main' }}
 
       - name: Run Unit Tests
         run: ./gradlew test