feat: Support SMSPlanet notification provider (#5800)

Co-authored-by: Frank Elsinga <frank@elsinga.de>

server/notification-providers/sms-planet.js

@@ -0,0 +1,40 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+
+class SMSPlanet extends NotificationProvider {
+    name = "SMSPlanet";
+
+    /**
+     * @inheritdoc
+     */
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        const okMsg = "Sent Successfully.";
+        const url = "https://api2.smsplanet.pl/sms";
+
+        try {
+            let config = {
+                headers: {
+                    "Authorization": "Bearer " + notification.smsplanetApiToken,
+                    "content-type": "multipart/form-data"
+                }
+            };
+
+            let data = {
+                "from": notification.smsplanetSenderName,
+                "to": notification.smsplanetPhoneNumbers,
+                "msg": msg.replace(/🔴/, "❌")
+            };
+
+            let response = await axios.post(url, data, config);
+            if (!response.data?.messageId) {
+                throw new Error(response.data?.errorMsg ?? "SMSPlanet server did not respond with the expected result");
+            }
+
+            return okMsg;
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+}
+
+module.exports = SMSPlanet;