expose info whether entry gateway enforces zk-nym in self-described api (#4529)

gateway/src/http/mod.rs

@@ -33,6 +33,7 @@ fn load_gateway_details(
     };
 
     Ok(api_requests::v1::gateway::models::Gateway {
+        enforces_zk_nyms: config.gateway.only_coconut_credentials,
         client_interfaces: api_requests::v1::gateway::models::ClientInterfaces {
             wireguard,
             mixnet_websockets: Some(api_requests::v1::gateway::models::WebSockets {

nym-node/nym-node-requests/src/api/v1/gateway/models.rs

@@ -7,6 +7,9 @@ use serde::{Deserialize, Serialize};
 #[derive(Serialize, Deserialize, Debug, Clone, JsonSchema)]
 #[cfg_attr(feature = "openapi", derive(utoipa::ToSchema))]
 pub struct Gateway {
+    #[serde(default)]
+    pub enforces_zk_nyms: bool,
+
     pub client_interfaces: ClientInterfaces,
 }
 

nym-node/src/node/mod.rs

@@ -484,6 +484,7 @@ impl NymNode {
             wss_port: self.config.entry_gateway.announce_wss_port,
         });
         let gateway_details = api_requests::v1::gateway::models::Gateway {
+            enforces_zk_nyms: self.config.entry_gateway.enforce_zk_nyms,
             client_interfaces: api_requests::v1::gateway::models::ClientInterfaces {
                 wireguard,
                 mixnet_websockets,