Macro export_plugin_v2 

macro_rules! export_plugin_v2 {
    ($body:expr) => { ... };
}

Export an ABI v2 plugin entrypoint under rpi_plugin_register_v2.

The expression receives &PluginApiVt and returns the plugin-defined registration status code.

rpi_plugin_sdk::export_plugin_v2!(|api| {
    // register tools and handlers through `api`
    0
});