Add plain text and coloured logging to the Client

Logs websocket events (connect, message, error and close events)

sig/nostr/client.rbs

@@ -10,6 +10,7 @@ module Nostr
 
     private
 
+    attr_reader logger: Logger
     attr_reader subscriptions: Hash[String, Subscription]
     attr_reader parent_to_child_channel: EventMachine::Channel
     attr_reader child_to_parent_channel: EventMachine::Channel

sig/nostr/client/color_logger.rbs

@@ -0,0 +1,6 @@
+module Nostr
+  class Client
+    class ColorLogger < Logger
+    end
+  end
+end

sig/nostr/client/logger.rbs

@@ -0,0 +1,12 @@
+module Nostr
+  class Client
+    class Logger
+      def attach_to: (Client client) -> void
+      def on_connect: (Relay relay) -> void
+      def on_message: (String message) -> void
+      def on_send: (String message) -> void
+      def on_error: (String message) -> void
+      def on_close: (String code, String reason) -> void
+    end
+  end
+end

sig/nostr/client/plain_logger.rbs

@@ -0,0 +1,6 @@
+module Nostr
+  class Client
+    class PlainLogger < Logger
+    end
+  end
+end