Alias Session send methods in WebSocketServer

Methods ``respond``, ``respond_fail`` and ``fire_event`` can be aliased to ``send_response``, ``send_fail_response`` and ``send_event``, respectively.

lib/debug/server_cdp.rb

@@ -668,17 +668,9 @@ def cleanup_reader
 
     ## Called by the SESSION thread
 
-    def respond req, **result
-      send_response req, **result
-    end
-
-    def respond_fail req, **result
-      send_fail_response req, **result
-    end
-
-    def fire_event event, **result
-      send_event event, **result
-    end
+    alias respond send_response
+    alias respond_fail send_fail_response
+    alias fire_event send_event
 
     def sock skip: false
       yield $stderr