Arbitrary Webhook for NotificationConnectors

Backend only deals in REST Webhooks
The API has custom Endpoints for Ntfy, Gotify, Lunasea that create pre-formatted Webhooks
#297 #259

API/APIEndpointRecords/NtfyRecord.cs

@@ -0,0 +1,17 @@
+namespace API.APIEndpointRecords;
+
+public record NtfyRecord(string endpoint, string username, string password, string topic, int priority)
+{
+    public bool Validate()
+    {
+        if (endpoint == string.Empty)
+            return false;
+        if (username == string.Empty)
+            return false;
+        if (password == string.Empty)
+            return false;
+        if (priority < 1 || priority > 5)
+            return false;
+        return true;
+    }
+}