Add global setting for own nostr relay

app/models/setting.rb

@@ -169,6 +169,9 @@ class Setting < RailsSettings::Base
   field :nostr_public_key, type: :string,
     default: ENV["NOSTR_PUBLIC_KEY"].presence
 
+  field :nostr_relay_url, type: :string,
+    default: ENV["NOSTR_RELAY_URL"].presence
+
   field :nostr_zaps_relay_limit, type: :integer,
     default: 12
 

app/views/admin/settings/services/_nostr.html.erb

@@ -19,6 +19,11 @@
         title: "Public key",
         description: "The corresponding public key of the accounts service"
       ) %>
+  <%= render FormElements::FieldsetResettableSettingComponent.new(
+        key: :nostr_relay_url,
+        title: "Relay URL",
+        description: "Websockets URL of a relay associated with #{Setting.primary_domain}"
+      ) %>
 </ul>
 </section>
 <section>