Add Nginx test configurations, HTTP scripts for self-serve APIs, and .env example; update .gitignore for IntelliJ files and logs.

- Introduced `PemToCoseConversionTest` for WebAuthn key testing.
- Added example Nginx config (`nginx-example.conf`) with CORS and PHP handling.
- Created HTTP test scripts for self-serve API endpoints.
- Provided `.env` example for Elastic Stack credentials.
- Updated `.gitignore` to include IntelliJ and Nginx logs.

nginx-example.conf

@@ -0,0 +1,68 @@
+# Main Nginx Configuration File
+worker_processes auto;
+pid /run/nginx.pid;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    # Include additional configuration files
+    include /etc/nginx/mime.types;
+    default_type application/octet-stream;
+
+    # Log settings
+    access_log /var/log/nginx/access.log;
+    error_log /var/log/nginx/error.log;
+
+    # Gzip settings (optional)
+    gzip on;
+    gzip_types text/plain application/xml text/css application/javascript;
+
+    # Include server block configurations
+    include /etc/nginx/conf.d/*.conf;
+
+    # Localhost without SSL
+    server {
+        listen [::]:80 default_server;
+        listen 80 default_server;
+
+        root /var/www/html;
+        index index.html index.htm index.php;
+
+        # Logging
+        error_log /var/log/nginx/error.log;
+        access_log /var/log/nginx/access.log combined;
+
+        # Add CORS headers
+        location / {
+            add_header Access-Control-Allow-Origin *;
+            add_header Access-Control-Allow-Methods "GET, POST, OPTIONS";
+            add_header Access-Control-Allow-Headers "Authorization, Content-Type, X-Requested-With, X-Customer-Number";
+            add_header Access-Control-Allow-Credentials true;
+
+            # If OPTIONS method is needed for preflight
+            if ($request_method = 'OPTIONS') {
+                add_header Access-Control-Allow-Origin *;
+                add_header Access-Control-Allow-Methods "GET, POST, OPTIONS";
+                add_header Access-Control-Allow-Headers "Authorization, Content-Type, X-Requested-With, X-Customer-Number";
+                return 204; # No Content
+            }
+
+            # Run the index.php file, no matter what the request URI is
+            try_files $uri $uri/ /index.php?$query_string;
+        }
+
+        # Location for PHP (using PHP 8.2)
+        location ~ \.php$ {
+            include fastcgi_params;
+            fastcgi_pass unix:/var/run/php/php8.2-fpm.sock;
+            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+            fastcgi_param SCRIPT_NAME $fastcgi_script_name;
+        }
+
+        # Location for static files
+        location ~* \.(cgi|shtml|phtml)$ {
+        }
+    }
+}