feat: add fullstack TypeScript template with Docker support

- Created package.json for managing workspaces (frontend and backend)
- Added scripts for development, build, testing, and Docker operations
- Implemented kill-dev-processes.sh script to terminate development processes gracefully

.dockerignore

@@ -0,0 +1,61 @@
+# Dockerignore für optimierte Builds
+# Verhindert, dass unnötige Dateien in den Build-Context kopiert werden
+
+# Git
+.git
+.gitignore
+
+# Documentation (README.md sollte im Image sein für Referenz)
+docs/
+
+# IDE & Editor
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Dependencies (werden separat installiert)
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+package-lock.json
+
+# Build outputs (werden im Container erstellt)
+/backend/dist/
+/frontend/build/
+
+# Environment (production wird separat gesetzt)
+.env*
+
+# Testing & Coverage
+coverage/
+.nyc_output
+**/*.test.*
+**/*.spec.*
+
+# Logs
+logs/
+*.log
+
+# Development Scripts
+scripts/
+
+# CI/CD
+.woodpecker.yml
+
+# Temporary & Cache
+tmp/
+temp/
+.cache/
+.parcel-cache
+
+# Database Files & Volumes
+*.db
+*.sqlite*
+postgres_data/
+redis_data/