feat: Add full support for WebSocket configuration and management in the Evolution API Client library

- Implement WebSocketConfig and WebSocketInfo models for event configuration
- Add create_websocket() method in the client for simplified creation of WebSocket handlers
- Expand WebSocket service with set_websocket() and find_websocket() methods
- Update README with detailed documentation on WebSocket configuration and usage
- Add new event handlers in the test example (on_qrcode, on_connection)

evolutionapi/models/websocket.py

@@ -0,0 +1,20 @@
+from typing import List, Optional
+from dataclasses import dataclass
+
+@dataclass
+class WebSocketConfig:
+    enabled: bool
+    events: List[str]
+
+    def __init__(self, enabled: bool, events: List[str]):
+        self.enabled = enabled
+        self.events = events
+
+@dataclass
+class WebSocketInfo:
+    enabled: bool
+    events: List[str]
+
+    def __init__(self, **kwargs):
+        self.enabled = kwargs.get('enabled', False)
+        self.events = kwargs.get('events', [])