Migrate examples to tests_e2e directory structure

- Relocated all files and scripts from `examples` to `tests_e2e` for better organization.
- Updated references and paths in configurations, scripts, and test files.
- Adjusted `bump-version.sh` to handle the new `tests_e2e` structure.
- Updated `.gitignore` to reflect path changes.

tests_e2e/swarm/README.md

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+# Docker Swarm Examples
+
+Self-contained examples for EasyHAProxy in Docker Swarm mode. **All documentation is in the YAML files as header comments.**
+
+## Quick Start
+
+1. Pick an example below
+2. Open the YAML file
+3. Read the header comments for complete instructions
+4. Run the commands step-by-step
+
+## Prerequisites
+
+All examples require:
+- Docker Swarm initialized (`docker swarm init`)
+- Overlay network created (`docker network create --driver overlay --attachable easyhaproxy`)
+- EasyHAProxy deployed (`docker stack deploy -c easyhaproxy.yml easyhaproxy`)
+
+See header comments in each file for detailed setup instructions.
+
+## Basic Examples
+
+| File | Description |
+|------|-------------|
+| [easyhaproxy.yml](easyhaproxy.yml) | EasyHAProxy service for Swarm with stats and certbot |
+| [services.yml](services.yml) | Basic services with SSL (embedded cert and file-based) |
+| [portainer.yml](portainer.yml) | Portainer management UI behind EasyHAProxy |
+
+## Plugin Examples
+
+| File | Description |
+|------|-------------|
+| [jwt-validator.yml](jwt-validator.yml) | JWT token validation for API protection |
+| [ip-whitelist.yml](ip-whitelist.yml) | IP whitelist for admin panels or sensitive services |
+| [cloudflare.yml](cloudflare.yml) | Restore real client IPs when behind Cloudflare CDN |
+| [plugins-combined.yml](plugins-combined.yml) | Multiple plugins combined for layered security |
+
+## Documentation Structure
+
+Each YAML file contains:
+- **WHAT THIS DEMONSTRATES** - Key features and concepts
+- **REQUIREMENTS** - Idempotent setup commands (safe to run multiple times)
+- **HOW TO START** - Command to deploy the stack
+- **HOW TO VERIFY IT'S WORKING** - Test commands with expected outputs
+- **CLEAN UP** - Commands to remove resources
+
+## Important: Service Labels
+
+In Swarm mode, labels must be under `deploy.labels`, NOT top-level `labels`:
+
+```yaml
+# ✅ CORRECT - Service labels
+deploy:
+  labels:
+    easyhaproxy.http.host: example.com
+
+# ❌ WRONG - Container labels (ignored in Swarm)
+labels:
+  easyhaproxy.http.host: example.com
+```
+
+## Additional Documentation
+
+- [Docker Swarm Guide](../../docs/swarm.md)
+- [Container Labels Reference](../../docs/container-labels.md)
+- [Using Plugins](../../docs/plugins/)
+- [ACME/Let's Encrypt](../../docs/acme.md)