Add custom error pages and Nginx configuration for proxy module

- Introduced custom HTML error pages for various HTTP status codes (400, 401, 403, 404, 408, 429, 500, 502, 503, 504) in the proxy module.
- Created a .gitignore file to exclude non-HTML files in the error resources directory.
- Updated Nginx configuration to serve custom error pages for upstream errors.
- Added new Nginx configuration templates for handling HTTP and stream protocols.
- Implemented Wireguard configuration templates and associated variables for secure connections.
- Established Kubernetes resources for Stunnel and Wireguard, including deployment, service accounts, and config maps.
- Defined variables for the Stunnel and Wireguard modules to facilitate configuration.
- Created a new Wol Proxy module with Kubernetes resources for deployment and service management.

terraform/modules/utils/proxy/resources/auth/auth_server.py

@@ -0,0 +1,40 @@
+import os
+import logging
+from http.server import BaseHTTPRequestHandler, HTTPServer
+
+# Configure logging
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(message)s"
+)
+
+EXPECTED_TOKEN = os.getenv("AUTH_TOKEN", "")
+
+class AuthHandler(BaseHTTPRequestHandler):
+    def do_GET(self):
+        auth = self.headers.get('Authorization')
+
+        # Log request info
+        client_ip = self.client_address[0]
+        logging.info(f"Auth request from {client_ip}")
+
+        if auth == f"Bearer {EXPECTED_TOKEN}":
+            logging.info("Authentication successful")
+            self.send_response(200)
+        else:
+            logging.warning("Authentication failed")
+            self.send_response(401)
+        self.end_headers()
+
+    def log_message(self, format, *args):
+        # Suppress default BaseHTTPRequestHandler logging
+        return
+
+if __name__ == '__main__':
+    if not EXPECTED_TOKEN:
+        logging.error("AUTH_TOKEN environment variable not set. Exiting.")
+        exit(1)
+
+    server = HTTPServer(('', 5000), AuthHandler)
+    logging.info("Auth server running on port 5000...")
+    server.serve_forever()