nip42: add initial relay auth support

Lightning-Invoice: lnbc1pjcpaakpp5gjs4f626hf8w6slx84xz3wwhlf309z503rjutckdxv6wwg5ldavsdqqcqzpgxqrrs0fppqjaxxw43p7em4g59vedv7pzl76kt0qyjfsp5qcp9de7a7t8h6zs5mcssfaqp4exrnkehqtg2hf0ary3z5cjnasvs9qyyssq55523e4h3cazhkv7f8jqf5qp0n8spykls49crsu5t3m636u3yj4qdqjkdl2nxf6jet5t2r2pfrxmm8rjpqjd3ylrzqq89m4gqt5l6ycqf92c7h
Closes: https://github.com/damus-io/damus/issues/940
Signed-off-by: Charlie Fish <contact@charlie.fish>
Signed-off-by: William Casarin <jb55@jb55.com>
Changelog-Added: Add NIP-42 relay auth support

nostrscript/NostrScript.swift

@@ -193,7 +193,8 @@ enum NScriptEventType: Int {
     case note = 2
     case notice = 3
     case eose = 4
-    
+    case auth = 5
+
     init(resp: NostrResponse) {
         switch resp {
         case .event:
@@ -204,6 +205,8 @@ enum NScriptEventType: Int {
             self = .eose
         case .ok:
             self = .ok
+        case .auth:
+            self = .auth
         }
     }
 }