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.

scripts/release.sh

@@ -0,0 +1,74 @@
+#!/bin/bash
+# PlayHours Release Script for Linux/macOS
+# This script automates the release process
+
+set -e
+
+echo "Starting PlayHours release process..."
+
+# Check if we're in a git repository
+if ! git status >/dev/null 2>&1; then
+    echo "Error: Not in a git repository"
+    exit 1
+fi
+
+# Check if there are uncommitted changes
+if ! git diff --quiet; then
+    echo "Warning: You have uncommitted changes. Please commit them first."
+    read -p "Do you want to continue anyway? (y/N): " choice
+    if [[ ! "$choice" =~ ^[Yy]$ ]]; then
+        echo "Release cancelled."
+        exit 1
+    fi
+fi
+
+# Get current version
+CURRENT_VERSION=$(grep "mod_version=" gradle.properties | cut -d'=' -f2)
+echo "Current version: $CURRENT_VERSION"
+
+# Ask for new version
+read -p "Enter new version (current: $CURRENT_VERSION): " NEW_VERSION
+
+if [ -z "$NEW_VERSION" ]; then
+    echo "No version entered. Using current version."
+    NEW_VERSION=$CURRENT_VERSION
+fi
+
+# Update version in gradle.properties
+sed -i "s/mod_version=$CURRENT_VERSION/mod_version=$NEW_VERSION/" gradle.properties
+
+# Build the project
+echo "Building project..."
+./gradlew clean build
+if [ $? -ne 0 ]; then
+    echo "Build failed!"
+    exit 1
+fi
+
+# Create git tag
+echo "Creating git tag v$NEW_VERSION..."
+git tag -a "v$NEW_VERSION" -m "Release v$NEW_VERSION"
+if [ $? -ne 0 ]; then
+    echo "Failed to create tag!"
+    exit 1
+fi
+
+# Push changes and tags
+echo "Pushing changes and tags..."
+git push origin main
+git push origin "v$NEW_VERSION"
+if [ $? -ne 0 ]; then
+    echo "Failed to push changes!"
+    exit 1
+fi
+
+echo ""
+echo "Release v$NEW_VERSION completed successfully!"
+echo ""
+echo "Next steps:"
+echo "1. Go to your Gitea repository"
+echo "2. Create a new release with tag v$NEW_VERSION"
+echo "3. Upload the JAR file from build/libs/playhours-$NEW_VERSION.jar"
+echo "4. Add release notes"
+echo ""
+echo "JAR file location: build/libs/playhours-$NEW_VERSION.jar"