feat(app): add evaluation history, bot control panel, simulation visualizer, and vendored signalr_core

FinlyticApp/third_party/signalr_core/README.md

@@ -0,0 +1,19 @@
+## Introduction
+
+ASP.NET Core **SignalR** is an open-source library that simplifies adding real-time web functionality to apps. Real-time web functionality enables server-side code to push content to clients instantly. It's platform-independent, and can be used on both the command-line and the browser.
+
+## Example
+```dart 
+final connection = HubConnectionBuilder().withUrl('http://localhost:5000/chatHub', 
+    HttpConnectionOptions(
+        logging: (level, message) => print(message),
+    )).build();
+ 
+await connection.start();
+
+connection.on('ReceiveMessage', (message) {
+    print(message.toString());
+});
+
+await connection.invoke('SendMessage', args: ['Bob', 'Says hi!']);
+```