fix: clippy::missing_errors_doc and clippy::double_must_use for from_tcp_rustls_with_timeouts

error: docs for function returning `Result` missing `# Errors` section
  --> packages/axum-server/src/custom_axum_server.rs:52:1
   |
52 | pub fn from_tcp_rustls_with_timeouts(socket: TcpListener, tls: RustlsConfig) -> RustlsServerResult {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: this function has a `#[must_use]` attribute with no message, but returns a type already marked as `#[must_use]`
  --> packages/axum-server/src/custom_axum_server.rs:52:1
   |
52 | pub fn from_tcp_rustls_with_timeouts(socket: TcpListener, tls: RustlsConfig) -> RustlsServerResult {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Added documentation with Errors section and removed #[must_use] attribute since Result type already has it.

Author: josecelano

packages/axum-server/src/custom_axum_server.rs

@@ -52,7 +52,11 @@ pub fn from_tcp_with_timeouts(socket: TcpListener) -> ServerResult {
     axum_server::from_tcp(socket).map(add_timeouts)
 }
 
-#[must_use]
+/// Creates an Axum server from a TCP listener with TLS and configured timeouts.
+///
+/// # Errors
+///
+/// Returns an error if the server cannot be created from the TCP socket or if TLS configuration fails.
 pub fn from_tcp_rustls_with_timeouts(socket: TcpListener, tls: RustlsConfig) -> RustlsServerResult {
     axum_server::from_tcp_rustls(socket, tls).map(add_timeouts)
 }