simple support for nip07

lib/const/auth_result.dart

@@ -1,5 +1,7 @@
 class AuthResult {
   static const int OK = 1;
 
-  static const int CANCEL = -1;
+  static const int REJECT = -1;
+
+  static const int ASK = 0;
 }

lib/const/reasonable_permissions.dart

@@ -0,0 +1,3 @@
+class ReasonablePermissions {
+  static const String text = "1;3;4;5;6;7,2-22242";
+}

lib/const/zap_type.dart

@@ -0,0 +1,5 @@
+class ZapType {
+  static const int LIGHTNING_APP = 1;
+
+  static const int NWC = 2;
+}