Add generate-keys.sh script for SSL and JWT key generation and update examples

- Added `generate-keys.sh` script to automate the generation of SSL certificates and JWT keys for testing.
- Updated examples and documentation across Docker, Kubernetes, Swarm, and static directories to include instructions for running the script.
- Removed hardcoded .pem files and replaced with dynamically generated keys and certificates.
- Emphasized testing-only usage of self-signed certificates.

examples/static/README.md

@@ -154,6 +154,20 @@ Access at: `http://localhost:1936`
 
 ## Running the Example
 
+### Prerequisites: Generate SSL Certificates
+
+Before running the examples, you need to generate the required SSL certificates:
+
+```bash
+# From the repository root
+./examples/generate-keys.sh
+```
+
+This script automatically generates:
+- SSL certificates for host1.local and host2.local
+- JWT keys for authentication examples
+- All other .pem files needed for testing
+
 ### 1. Start the Example
 
 ```bash