feat: add optional native-tls support as alternative to rustls (#8037)

Signed-off-by: Rodolfo Olivieri <rolivier@redhat.com>
Co-authored-by: Claude <noreply@anthropic.com>

crates/goose-cli/src/lib.rs

@@ -1,3 +1,9 @@
+#[cfg(not(any(feature = "rustls-tls", feature = "native-tls")))]
+compile_error!("At least one of `rustls-tls` or `native-tls` features must be enabled");
+
+#[cfg(all(feature = "rustls-tls", feature = "native-tls"))]
+compile_error!("Features `rustls-tls` and `native-tls` are mutually exclusive");
+
 pub mod cli;
 pub mod commands;
 pub mod logging;