feat: create reboot gateway function (#549)

* Update PyViCareService.py

Add reboot gateway function

* Apply suggestions from code review

* Apply suggestions from code review

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Co-authored-by: Christopher Fenner <9592452+CFenner@users.noreply.github.com>

Author: fishter

PyViCare/PyViCareService.py

@@ -62,3 +62,8 @@ def fetch_all_features(self) -> Any:
         if self._isGateway():
             url = f'/features/installations/{self.accessor.id}/gateways/{self.accessor.serial}/features/'
         return self.oauth_manager.get(url)
+
+    def reboot_gateway(self) -> Any:
+        url = f'/equipment/installations/{self.accessor.id}/gateways/{self.accessor.serial}/reboot'
+        data = "{}"
+        return self.oauth_manager.post(url, data)