⭐ feat(www): Finish up on the onboarding (#210)

Merging this prematurely to make sure the team is on the same boat... like dang! We need to find a better way to do this. 

Plus it has become too big

packages/steam/SSEEvents.cs

@@ -0,0 +1,19 @@
+using System.Text.Json;
+
+public class ServerSentEvent
+{
+    public string Type { get; set; }
+    public object Data { get; set; }
+
+    public ServerSentEvent(string type, object data)
+    {
+        Type = type;
+        Data = data;
+    }
+
+    public string Serialize()
+    {
+        var dataJson = JsonSerializer.Serialize(Data);
+        return $"event: {Type}\ndata: {dataJson}\n\n";
+    }
+}