Implements graceful shutdown for the admin and s3api servers. They are shut down before other components (IAM, s3logger, etc.) to allow the servers to properly handle any pending requests while dependencies are still active. The shutdown process is controlled by a context with a 10-second timeout. If it exceeds this duration, all remaining requests are forcefully terminated and the servers are closed.
Fiber includes a built-in panic recovery middleware that catches panics in route handlers and middlewares, preventing the server from crashing and allowing it to recover. Alongside this, a stack trace handler has been implemented to store system panics in the context locals (stack).
Both the S3 API server and the Admin server use a global error handler to catch unexpected exceptions and recovered panics. The middleware’s logic is to log the panic or internal error and return an S3-style internal server error response.
Additionally, dedicated **Panic** and **InternalError** loggers have been added to the `s3api` debug logger to record system panics and internal errors in the console.
Adjusts the admin apis to the new advanced routing changes.
Enables debug logging for the separate admin server(when a separate server is run for the admin apis).
Adds the quiet mode for the separate admin server.
