Added Zabbix service widget

docs/widgets/services/index.md

@@ -127,3 +127,4 @@ You can also find a list of all available service widgets in the sidebar navigat
 - [WGEasy](wgeasy.md)
 - [WhatsUpDocker](whatsupdocker.md)
 - [xTeVe](xteve.md)
+- [Zabbix](zabbix.md)

docs/widgets/services/zabbix.md

@@ -0,0 +1,19 @@
+---
+title: Zabbix
+description: Zabbix Widget Configuration
+---
+
+Learn more about [Zabbix](https://github.com/zabbix/zabbix).
+
+See the [Zabbix documentation](https://www.zabbix.com/documentation/current/en/manual/web_interface/frontend_sections/users/api_tokens) for details on generating API tokens.
+
+The widget supports (at least) Zibbax server version 7.0.
+
+Allowed fields: `["warning", "average", "high", "disaster"]`.
+
+```yaml
+widget:
+  type: zabbix
+  url: http://zabbix.host.or.ip/zabbix
+  key: your-api-key
+```