Implemented "roundtrip" status checking. Added node ssl field.

MoonlightServers.Frontend/Services/NodeService.cs

@@ -0,0 +1,21 @@
+using MoonCore.Attributes;
+using MoonCore.Helpers;
+using MoonlightServers.Shared.Http.Responses.Admin.Nodes.Sys;
+
+namespace MoonlightServers.Frontend.Services;
+
+[Scoped]
+public class NodeService
+{
+    private readonly HttpApiClient HttpApiClient;
+
+    public NodeService(HttpApiClient httpApiClient)
+    {
+        HttpApiClient = httpApiClient;
+    }
+
+    public async Task<NodeSystemStatusResponse> GetSystemStatus(int nodeId)
+    {
+        return await HttpApiClient.GetJson<NodeSystemStatusResponse>($"api/admin/servers/nodes/{nodeId}/system/status");
+    }
+}