feat: Add Uptime Kuma version check via Socket.IO

Retrieve the running Uptime Kuma version by authenticating over
Socket.IO and reading the info event. This adds a new login_socket
dataset field, the fetch_socket_info helper, and the python-socketio
and websocket-client dependencies.

services.yaml

@@ -83,6 +83,19 @@ services:
     upstream_latest_extract:
       type: jsonpath
       value: $.tag_name
+  - name: Uptime Kuma
+    base_url: https://uptime.jeena.net/
+    current_version_url:
+    current_version_extract:
+    login_socket:
+      url: https://uptime.jeena.net/
+      username_env: UPTIME_KUMA_USERNAME
+      password_env: UPTIME_KUMA_PASSWORD
+    upstream_latest_version_url: https://api.github.com/repos/louislam/uptime-kuma/releases/latest
+    upstream_latest_extract:
+      type: jsonpath
+      value: $.tag_name
+    notes: Version retrieved via authenticated Socket.IO info event.
   - name: FreshRSS
     base_url: https://rss.jeena.net/
     current_version_url: https://rss.jeena.net/i/?a=about