fix(proxy): specify Forwarded headers in ProxyFix

Updated the ProxyFix middleware configuration to explicitly include Forwarded headers for IP address, protocol, host, and port. This enhances reliability of request data handling when the app is behind a reverse proxy, ensuring correct client information is passed to the app.

src/small/app.py

@@ -20,7 +20,7 @@ def main():
         app.debug = True
 
     if int(environ.get("PROXY_FIX", 0)):
-        app.wsgi_app = ProxyFix(app.wsgi_app)
+        app.wsgi_app = ProxyFix(app.wsgi_app, x_for=1, x_proto=1, x_host=1, x_port=1)
 
     app.run(port=port)