feat(scripts): add CI utilities for versioning and changelog

- Add scripts to detect version changes and generate changelogs
- Include setup for installing and configuring git-cliff
- Automate release creation and changelog updates for CI workflows
- Improve Git author setup for consistent commits

scripts/setup-git.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Optional inputs (positionals) oder Fallback auf Umgebungsvariablen
+AUTHOR_NAME="${1:-${CI_COMMIT_AUTHOR_NAME:-CI Bot}}"
+AUTHOR_EMAIL="${2:-${CI_COMMIT_AUTHOR_EMAIL:-ci@example.com}}"
+
+echo "🔧 Setting up git author:"
+echo "   Name : $AUTHOR_NAME"
+echo "   Email: $AUTHOR_EMAIL"
+
+git config --global user.name "$AUTHOR_NAME"
+git config --global user.email "$AUTHOR_EMAIL"