cleanup for webapi things

Torch.API/WebAPI/Plugin/PluginItem.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Text.Json.Serialization;
+
+namespace Torch.API.WebAPI.Plugin;
+
+public record PluginItem(Guid Id, string Name, string Author, string Description, string LatestVersion,
+                         VersionItem[] Versions)
+{
+    [JsonIgnore]
+    public bool Installed { get; set; }
+}