feat(build): add release automation tasks and CI/CD workflows

- Introduced Gradle tasks for release preparation, version bumping, and git tagging.
- Added CI workflow for continuous integration on pushes and pull requests.
- Implemented release workflow for automated builds and Gitea releases upon tag pushes.
- Created scripts for manual release processes on Windows and Linux/macOS.
- Documented the release process and Gitea Actions setup in the new RELEASE.md and setup-gitea-actions.md files.

.gitea/workflows/ci.yml

@@ -0,0 +1,47 @@
+name: CI
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    
+    - name: Set up JDK 17
+      uses: actions/setup-java@v4
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+    
+    - name: Cache Gradle packages
+      uses: actions/cache@v3
+      with:
+        path: |
+          ~/.gradle/caches
+          ~/.gradle/wrapper
+        key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+        restore-keys: |
+          ${{ runner.os }}-gradle-
+    
+    - name: Make gradlew executable
+      run: chmod +x ./gradlew
+    
+    - name: Run tests
+      run: ./gradlew test
+    
+    - name: Build project
+      run: ./gradlew build
+    
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: build-artifacts
+        path: build/libs/*.jar
+        retention-days: 7

.gitea/workflows/release.yml

@@ -0,0 +1,89 @@
+name: Release Build
+
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version to release (e.g., 1.0.1)'
+        required: true
+        type: string
+
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0  # Fetch all history for proper tagging
+    
+    - name: Set up JDK 17
+      uses: actions/setup-java@v4
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+    
+    - name: Cache Gradle packages
+      uses: actions/cache@v3
+      with:
+        path: |
+          ~/.gradle/caches
+          ~/.gradle/wrapper
+        key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+        restore-keys: |
+          ${{ runner.os }}-gradle-
+    
+    - name: Make gradlew executable
+      run: chmod +x ./gradlew
+    
+    - name: Build with Gradle
+      run: ./gradlew build
+    
+    - name: Create Gitea Release
+      run: |
+        # Get the tag name from the trigger
+        TAG_NAME=${GITHUB_REF#refs/tags/}
+        echo "Creating release for tag: $TAG_NAME"
+        
+        # Create release using Gitea API
+        curl -X POST \
+          -H "Authorization: token ${{ secrets.TOKEN }}" \
+          -H "Content-Type: application/json" \
+          -d "{
+            \"tag_name\": \"$TAG_NAME\",
+            \"name\": \"PlayHours $TAG_NAME\",
+            \"body\": \"## PlayHours $TAG_NAME\\n\\n### Installation\\n1. Download the JAR file below\\n2. Place it in your server's \`mods\` folder\\n3. Restart your server\\n\\n### Requirements\\n- Minecraft ${{ env.MINECRAFT_VERSION || '1.20.1' }}\\n- Forge ${{ env.FORGE_VERSION || '47.4.10' }}\\n- Java 17+\",
+            \"draft\": false,
+            \"prerelease\": false
+          }" \
+          "${{ env.API_URL || 'https://gitea.kamisama.ovh:2222' }}/api/v1/repos/${{ github.repository }}/releases"
+      
+      env:
+        GITEA_TOKEN: ${{ secrets.TOKEN }}
+        GITEA_API_URL: ${{ secrets.API_URL }}
+    
+    - name: Upload JAR to Release
+      run: |
+        TAG_NAME=${GITHUB_REF#refs/tags/}
+        JAR_FILE=$(find build/libs -name "*.jar" | head -1)
+        
+        if [ -z "$JAR_FILE" ]; then
+          echo "No JAR file found in build/libs/"
+          exit 1
+        fi
+        
+        echo "Uploading $JAR_FILE to release $TAG_NAME"
+        
+        # Upload JAR file to the release
+        curl -X POST \
+          -H "Authorization: token ${{ secrets.TOKEN }}" \
+          -F "attachment=@$JAR_FILE" \
+          "${{ env.API_URL || 'https://gitea.kamisama.ovh:2222' }}/api/v1/repos/${{ github.repository }}/releases/$TAG_NAME/assets?name=$(basename $JAR_FILE)"
+      
+      env:
+        GITEA_TOKEN: ${{ secrets.TOKEN }}
+        GITEA_API_URL: ${{ secrets.API_URL }}